qemu-e2k/block/gluster.c

1695 lines
52 KiB
C
Raw Normal View History

block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
/*
* GlusterFS backend for QEMU
*
* Copyright (C) 2012 Bharata B Rao <bharata@linux.vnet.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
*
*/
#include "qemu/osdep.h"
#include "qemu/units.h"
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
#include <glusterfs/api/glfs.h>
#include "block/block_int.h"
#include "block/qdict.h"
2016-03-14 09:01:28 +01:00
#include "qapi/error.h"
#include "qapi/qmp/qdict.h"
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
#include "qapi/qmp/qerror.h"
#include "qemu/uri.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
#include "qemu/option.h"
#include "qemu/cutils.h"
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
#ifdef CONFIG_GLUSTERFS_FTRUNCATE_HAS_STAT
# define glfs_ftruncate(fd, offset) glfs_ftruncate(fd, offset, NULL, NULL)
#endif
#define GLUSTER_OPT_FILENAME "filename"
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
#define GLUSTER_OPT_VOLUME "volume"
#define GLUSTER_OPT_PATH "path"
#define GLUSTER_OPT_TYPE "type"
#define GLUSTER_OPT_SERVER_PATTERN "server."
#define GLUSTER_OPT_HOST "host"
#define GLUSTER_OPT_PORT "port"
#define GLUSTER_OPT_TO "to"
#define GLUSTER_OPT_IPV4 "ipv4"
#define GLUSTER_OPT_IPV6 "ipv6"
#define GLUSTER_OPT_SOCKET "socket"
#define GLUSTER_OPT_DEBUG "debug"
#define GLUSTER_DEFAULT_PORT 24007
#define GLUSTER_DEBUG_DEFAULT 4
#define GLUSTER_DEBUG_MAX 9
#define GLUSTER_OPT_LOGFILE "logfile"
#define GLUSTER_LOGFILE_DEFAULT "-" /* handled in libgfapi as /dev/stderr */
/*
* Several versions of GlusterFS (3.12? -> 6.0.1) fail when the transfer size
* is greater or equal to 1024 MiB, so we are limiting the transfer size to 512
* MiB to avoid this rare issue.
*/
#define GLUSTER_MAX_TRANSFER (512 * MiB)
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
#define GERR_INDEX_HINT "hint: check in 'server' array index '%d'\n"
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
typedef struct GlusterAIOCB {
int64_t size;
int ret;
Coroutine *coroutine;
AioContext *aio_context;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
} GlusterAIOCB;
typedef struct BDRVGlusterState {
struct glfs *glfs;
struct glfs_fd *fd;
char *logfile;
bool supports_seek_data;
int debug;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
} BDRVGlusterState;
typedef struct BDRVGlusterReopenState {
struct glfs *glfs;
struct glfs_fd *fd;
} BDRVGlusterReopenState;
typedef struct GlfsPreopened {
char *volume;
glfs_t *fs;
int ref;
} GlfsPreopened;
typedef struct ListElement {
QLIST_ENTRY(ListElement) list;
GlfsPreopened saved;
} ListElement;
static QLIST_HEAD(, ListElement) glfs_list;
static QemuOptsList qemu_gluster_create_opts = {
.name = "qemu-gluster-create-opts",
.head = QTAILQ_HEAD_INITIALIZER(qemu_gluster_create_opts.head),
.desc = {
{
.name = BLOCK_OPT_SIZE,
.type = QEMU_OPT_SIZE,
.help = "Virtual disk size"
},
{
.name = BLOCK_OPT_PREALLOC,
.type = QEMU_OPT_STRING,
.help = "Preallocation mode (allowed values: off"
#ifdef CONFIG_GLUSTERFS_FALLOCATE
", falloc"
#endif
#ifdef CONFIG_GLUSTERFS_ZEROFILL
", full"
#endif
")"
},
{
.name = GLUSTER_OPT_DEBUG,
.type = QEMU_OPT_NUMBER,
.help = "Gluster log level, valid range is 0-9",
},
{
.name = GLUSTER_OPT_LOGFILE,
.type = QEMU_OPT_STRING,
.help = "Logfile path of libgfapi",
},
{ /* end of list */ }
}
};
static QemuOptsList runtime_opts = {
.name = "gluster",
.head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
.desc = {
{
.name = GLUSTER_OPT_FILENAME,
.type = QEMU_OPT_STRING,
.help = "URL to the gluster image",
},
{
.name = GLUSTER_OPT_DEBUG,
.type = QEMU_OPT_NUMBER,
.help = "Gluster log level, valid range is 0-9",
},
{
.name = GLUSTER_OPT_LOGFILE,
.type = QEMU_OPT_STRING,
.help = "Logfile path of libgfapi",
},
{ /* end of list */ }
},
};
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
static QemuOptsList runtime_json_opts = {
.name = "gluster_json",
.head = QTAILQ_HEAD_INITIALIZER(runtime_json_opts.head),
.desc = {
{
.name = GLUSTER_OPT_VOLUME,
.type = QEMU_OPT_STRING,
.help = "name of gluster volume where VM image resides",
},
{
.name = GLUSTER_OPT_PATH,
.type = QEMU_OPT_STRING,
.help = "absolute path to image file in gluster volume",
},
{
.name = GLUSTER_OPT_DEBUG,
.type = QEMU_OPT_NUMBER,
.help = "Gluster log level, valid range is 0-9",
},
{ /* end of list */ }
},
};
static QemuOptsList runtime_type_opts = {
.name = "gluster_type",
.head = QTAILQ_HEAD_INITIALIZER(runtime_type_opts.head),
.desc = {
{
.name = GLUSTER_OPT_TYPE,
.type = QEMU_OPT_STRING,
.help = "inet|unix",
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
},
{ /* end of list */ }
},
};
static QemuOptsList runtime_unix_opts = {
.name = "gluster_unix",
.head = QTAILQ_HEAD_INITIALIZER(runtime_unix_opts.head),
.desc = {
{
.name = GLUSTER_OPT_SOCKET,
.type = QEMU_OPT_STRING,
.help = "socket file path (legacy)",
},
{
.name = GLUSTER_OPT_PATH,
.type = QEMU_OPT_STRING,
.help = "socket file path (QAPI)",
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
},
{ /* end of list */ }
},
};
static QemuOptsList runtime_inet_opts = {
.name = "gluster_inet",
.head = QTAILQ_HEAD_INITIALIZER(runtime_inet_opts.head),
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
.desc = {
{
.name = GLUSTER_OPT_TYPE,
.type = QEMU_OPT_STRING,
.help = "inet|unix",
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
},
{
.name = GLUSTER_OPT_HOST,
.type = QEMU_OPT_STRING,
.help = "host address (hostname/ipv4/ipv6 addresses)",
},
{
.name = GLUSTER_OPT_PORT,
.type = QEMU_OPT_STRING,
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
.help = "port number on which glusterd is listening (default 24007)",
},
{
.name = "to",
.type = QEMU_OPT_NUMBER,
.help = "max port number, not supported by gluster",
},
{
.name = "ipv4",
.type = QEMU_OPT_BOOL,
.help = "ipv4 bool value, not supported by gluster",
},
{
.name = "ipv6",
.type = QEMU_OPT_BOOL,
.help = "ipv6 bool value, not supported by gluster",
},
{ /* end of list */ }
},
};
static void glfs_set_preopened(const char *volume, glfs_t *fs)
{
ListElement *entry = NULL;
entry = g_new(ListElement, 1);
entry->saved.volume = g_strdup(volume);
entry->saved.fs = fs;
entry->saved.ref = 1;
QLIST_INSERT_HEAD(&glfs_list, entry, list);
}
static glfs_t *glfs_find_preopened(const char *volume)
{
ListElement *entry = NULL;
QLIST_FOREACH(entry, &glfs_list, list) {
if (strcmp(entry->saved.volume, volume) == 0) {
entry->saved.ref++;
return entry->saved.fs;
}
}
return NULL;
}
static void glfs_clear_preopened(glfs_t *fs)
{
ListElement *entry = NULL;
ListElement *next;
if (fs == NULL) {
return;
}
QLIST_FOREACH_SAFE(entry, &glfs_list, list, next) {
if (entry->saved.fs == fs) {
if (--entry->saved.ref) {
return;
}
QLIST_REMOVE(entry, list);
glfs_fini(entry->saved.fs);
g_free(entry->saved.volume);
g_free(entry);
}
}
}
static int parse_volume_options(BlockdevOptionsGluster *gconf, char *path)
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
{
char *p, *q;
if (!path) {
return -EINVAL;
}
/* volume */
p = q = path + strspn(path, "/");
p += strcspn(p, "/");
if (*p == '\0') {
return -EINVAL;
}
gconf->volume = g_strndup(q, p - q);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
/* path */
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
p += strspn(p, "/");
if (*p == '\0') {
return -EINVAL;
}
gconf->path = g_strdup(p);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
return 0;
}
/*
* file=gluster[+transport]://[host[:port]]/volume/path[?socket=...]
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
*
* 'gluster' is the protocol.
*
* 'transport' specifies the transport type used to connect to gluster
* management daemon (glusterd). Valid transport types are
* tcp or unix. If a transport type isn't specified, then tcp type is assumed.
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
*
* 'host' specifies the host where the volume file specification for
* the given volume resides. This can be either hostname or ipv4 address.
* If transport type is 'unix', then 'host' field should not be specified.
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
* The 'socket' field needs to be populated with the path to unix domain
* socket.
*
* 'port' is the port number on which glusterd is listening. This is optional
* and if not specified, QEMU will send 0 which will make gluster to use the
* default port. If the transport type is unix, then 'port' should not be
* specified.
*
* 'volume' is the name of the gluster volume which contains the VM image.
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
*
* 'path' is the path to the actual VM image that resides on gluster volume.
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
*
* Examples:
*
* file=gluster://1.2.3.4/testvol/a.img
* file=gluster+tcp://1.2.3.4/testvol/a.img
* file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img
* file=gluster+tcp://host.domain.com:24007/testvol/dir/a.img
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
* file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket
*/
static int qemu_gluster_parse_uri(BlockdevOptionsGluster *gconf,
const char *filename)
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
{
SocketAddress *gsconf;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
URI *uri;
QueryParams *qp = NULL;
bool is_unix = false;
int ret = 0;
uri = uri_parse(filename);
if (!uri) {
return -EINVAL;
}
gconf->server = g_new0(SocketAddressList, 1);
gconf->server->value = gsconf = g_new0(SocketAddress, 1);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
/* transport */
if (!uri->scheme || !strcmp(uri->scheme, "gluster")) {
gsconf->type = SOCKET_ADDRESS_TYPE_INET;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
} else if (!strcmp(uri->scheme, "gluster+tcp")) {
gsconf->type = SOCKET_ADDRESS_TYPE_INET;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
} else if (!strcmp(uri->scheme, "gluster+unix")) {
gsconf->type = SOCKET_ADDRESS_TYPE_UNIX;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
is_unix = true;
} else if (!strcmp(uri->scheme, "gluster+rdma")) {
gsconf->type = SOCKET_ADDRESS_TYPE_INET;
Convert error_report() to warn_report() Convert all uses of error_report("warning:"... to use warn_report() instead. This helps standardise on a single method of printing warnings to the user. All of the warnings were changed using these two commands: find ./* -type f -exec sed -i \ 's|error_report(".*warning[,:] |warn_report("|Ig' {} + Indentation fixed up manually afterwards. The test-qdev-global-props test case was manually updated to ensure that this patch passes make check (as the test cases are case sensitive). Signed-off-by: Alistair Francis <alistair.francis@xilinx.com> Suggested-by: Thomas Huth <thuth@redhat.com> Cc: Jeff Cody <jcody@redhat.com> Cc: Kevin Wolf <kwolf@redhat.com> Cc: Max Reitz <mreitz@redhat.com> Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Lieven <pl@kamp.de> Cc: Josh Durgin <jdurgin@redhat.com> Cc: "Richard W.M. Jones" <rjones@redhat.com> Cc: Markus Armbruster <armbru@redhat.com> Cc: Peter Crosthwaite <crosthwaite.peter@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Cc: Greg Kurz <groug@kaod.org> Cc: Rob Herring <robh@kernel.org> Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Peter Chubb <peter.chubb@nicta.com.au> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Marcel Apfelbaum <marcel@redhat.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: David Gibson <david@gibson.dropbear.id.au> Cc: Alexander Graf <agraf@suse.de> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Cornelia Huck <cohuck@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Acked-by: Greg Kurz <groug@kaod.org> Acked-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed by: Peter Chubb <peter.chubb@data61.csiro.au> Acked-by: Max Reitz <mreitz@redhat.com> Acked-by: Marcel Apfelbaum <marcel@redhat.com> Message-Id: <e1cfa2cd47087c248dd24caca9c33d9af0c499b0.1499866456.git.alistair.francis@xilinx.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2017-07-12 15:57:41 +02:00
warn_report("rdma feature is not supported, falling back to tcp");
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
} else {
ret = -EINVAL;
goto out;
}
ret = parse_volume_options(gconf, uri->path);
if (ret < 0) {
goto out;
}
qp = query_params_parse(uri->query);
if (qp->n > 1 || (is_unix && !qp->n) || (!is_unix && qp->n)) {
ret = -EINVAL;
goto out;
}
if (is_unix) {
if (uri->server || uri->port) {
ret = -EINVAL;
goto out;
}
if (strcmp(qp->p[0].name, "socket")) {
ret = -EINVAL;
goto out;
}
gsconf->u.q_unix.path = g_strdup(qp->p[0].value);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
} else {
gsconf->u.inet.host = g_strdup(uri->server ? uri->server : "localhost");
if (uri->port) {
gsconf->u.inet.port = g_strdup_printf("%d", uri->port);
} else {
gsconf->u.inet.port = g_strdup_printf("%d", GLUSTER_DEFAULT_PORT);
}
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
}
out:
if (qp) {
query_params_free(qp);
}
uri_free(uri);
return ret;
}
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
static struct glfs *qemu_gluster_glfs_init(BlockdevOptionsGluster *gconf,
Error **errp)
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
{
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
struct glfs *glfs;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
int ret;
int old_errno;
SocketAddressList *server;
unsigned long long port;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
glfs = glfs_find_preopened(gconf->volume);
if (glfs) {
return glfs;
}
glfs = glfs_new(gconf->volume);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
if (!glfs) {
goto out;
}
glfs_set_preopened(gconf->volume, glfs);
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
for (server = gconf->server; server; server = server->next) {
switch (server->value->type) {
case SOCKET_ADDRESS_TYPE_UNIX:
ret = glfs_set_volfile_server(glfs, "unix",
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
server->value->u.q_unix.path, 0);
break;
case SOCKET_ADDRESS_TYPE_INET:
if (parse_uint_full(server->value->u.inet.port, &port, 10) < 0 ||
port > 65535) {
error_setg(errp, "'%s' is not a valid port number",
server->value->u.inet.port);
errno = EINVAL;
goto out;
}
ret = glfs_set_volfile_server(glfs, "tcp",
server->value->u.inet.host,
(int)port);
break;
case SOCKET_ADDRESS_TYPE_VSOCK:
case SOCKET_ADDRESS_TYPE_FD:
default:
abort();
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
}
if (ret < 0) {
goto out;
}
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
}
ret = glfs_set_logging(glfs, gconf->logfile, gconf->debug);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
if (ret < 0) {
goto out;
}
ret = glfs_init(glfs);
if (ret) {
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
error_setg(errp, "Gluster connection for volume %s, path %s failed"
" to connect", gconf->volume, gconf->path);
for (server = gconf->server; server; server = server->next) {
if (server->value->type == SOCKET_ADDRESS_TYPE_UNIX) {
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
error_append_hint(errp, "hint: failed on socket %s ",
server->value->u.q_unix.path);
} else {
error_append_hint(errp, "hint: failed on host %s and port %s ",
server->value->u.inet.host,
server->value->u.inet.port);
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
}
}
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
error_append_hint(errp, "Please refer to gluster logs for more info\n");
/* glfs_init sometimes doesn't set errno although docs suggest that */
if (errno == 0) {
errno = EINVAL;
}
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
goto out;
}
return glfs;
out:
if (glfs) {
old_errno = errno;
glfs_clear_preopened(glfs);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
errno = old_errno;
}
return NULL;
}
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
/*
* Convert the json formatted command line into qapi.
*/
static int qemu_gluster_parse_json(BlockdevOptionsGluster *gconf,
QDict *options, Error **errp)
{
QemuOpts *opts;
SocketAddress *gsconf = NULL;
SocketAddressList *curr = NULL;
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
QDict *backing_options = NULL;
Error *local_err = NULL;
char *str = NULL;
const char *ptr;
int i, type, num_servers;
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
/* create opts info from runtime_json_opts list */
opts = qemu_opts_create(&runtime_json_opts, NULL, 0, &error_abort);
qemu_opts_absorb_qdict(opts, options, &local_err);
if (local_err) {
goto out;
}
num_servers = qdict_array_entries(options, GLUSTER_OPT_SERVER_PATTERN);
if (num_servers < 1) {
error_setg(&local_err, QERR_MISSING_PARAMETER, "server");
goto out;
}
ptr = qemu_opt_get(opts, GLUSTER_OPT_VOLUME);
if (!ptr) {
error_setg(&local_err, QERR_MISSING_PARAMETER, GLUSTER_OPT_VOLUME);
goto out;
}
gconf->volume = g_strdup(ptr);
ptr = qemu_opt_get(opts, GLUSTER_OPT_PATH);
if (!ptr) {
error_setg(&local_err, QERR_MISSING_PARAMETER, GLUSTER_OPT_PATH);
goto out;
}
gconf->path = g_strdup(ptr);
qemu_opts_del(opts);
for (i = 0; i < num_servers; i++) {
str = g_strdup_printf(GLUSTER_OPT_SERVER_PATTERN"%d.", i);
qdict_extract_subqdict(options, &backing_options, str);
/* create opts info from runtime_type_opts list */
opts = qemu_opts_create(&runtime_type_opts, NULL, 0, &error_abort);
qemu_opts_absorb_qdict(opts, backing_options, &local_err);
if (local_err) {
goto out;
}
ptr = qemu_opt_get(opts, GLUSTER_OPT_TYPE);
if (!ptr) {
error_setg(&local_err, QERR_MISSING_PARAMETER, GLUSTER_OPT_TYPE);
error_append_hint(&local_err, GERR_INDEX_HINT, i);
goto out;
}
gsconf = g_new0(SocketAddress, 1);
if (!strcmp(ptr, "tcp")) {
ptr = "inet"; /* accept legacy "tcp" */
}
type = qapi_enum_parse(&SocketAddressType_lookup, ptr, -1, NULL);
if (type != SOCKET_ADDRESS_TYPE_INET
&& type != SOCKET_ADDRESS_TYPE_UNIX) {
error_setg(&local_err,
"Parameter '%s' may be 'inet' or 'unix'",
GLUSTER_OPT_TYPE);
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
error_append_hint(&local_err, GERR_INDEX_HINT, i);
goto out;
}
gsconf->type = type;
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
qemu_opts_del(opts);
if (gsconf->type == SOCKET_ADDRESS_TYPE_INET) {
/* create opts info from runtime_inet_opts list */
opts = qemu_opts_create(&runtime_inet_opts, NULL, 0, &error_abort);
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
qemu_opts_absorb_qdict(opts, backing_options, &local_err);
if (local_err) {
goto out;
}
ptr = qemu_opt_get(opts, GLUSTER_OPT_HOST);
if (!ptr) {
error_setg(&local_err, QERR_MISSING_PARAMETER,
GLUSTER_OPT_HOST);
error_append_hint(&local_err, GERR_INDEX_HINT, i);
goto out;
}
gsconf->u.inet.host = g_strdup(ptr);
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
ptr = qemu_opt_get(opts, GLUSTER_OPT_PORT);
if (!ptr) {
error_setg(&local_err, QERR_MISSING_PARAMETER,
GLUSTER_OPT_PORT);
error_append_hint(&local_err, GERR_INDEX_HINT, i);
goto out;
}
gsconf->u.inet.port = g_strdup(ptr);
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
/* defend for unsupported fields in InetSocketAddress,
* i.e. @ipv4, @ipv6 and @to
*/
ptr = qemu_opt_get(opts, GLUSTER_OPT_TO);
if (ptr) {
gsconf->u.inet.has_to = true;
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
}
ptr = qemu_opt_get(opts, GLUSTER_OPT_IPV4);
if (ptr) {
gsconf->u.inet.has_ipv4 = true;
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
}
ptr = qemu_opt_get(opts, GLUSTER_OPT_IPV6);
if (ptr) {
gsconf->u.inet.has_ipv6 = true;
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
}
if (gsconf->u.inet.has_to) {
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
error_setg(&local_err, "Parameter 'to' not supported");
goto out;
}
if (gsconf->u.inet.has_ipv4 || gsconf->u.inet.has_ipv6) {
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
error_setg(&local_err, "Parameters 'ipv4/ipv6' not supported");
goto out;
}
qemu_opts_del(opts);
} else {
/* create opts info from runtime_unix_opts list */
opts = qemu_opts_create(&runtime_unix_opts, NULL, 0, &error_abort);
qemu_opts_absorb_qdict(opts, backing_options, &local_err);
if (local_err) {
goto out;
}
ptr = qemu_opt_get(opts, GLUSTER_OPT_PATH);
if (!ptr) {
ptr = qemu_opt_get(opts, GLUSTER_OPT_SOCKET);
} else if (qemu_opt_get(opts, GLUSTER_OPT_SOCKET)) {
error_setg(&local_err,
"Conflicting parameters 'path' and 'socket'");
error_append_hint(&local_err, GERR_INDEX_HINT, i);
goto out;
}
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
if (!ptr) {
error_setg(&local_err, QERR_MISSING_PARAMETER,
GLUSTER_OPT_PATH);
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
error_append_hint(&local_err, GERR_INDEX_HINT, i);
goto out;
}
gsconf->u.q_unix.path = g_strdup(ptr);
qemu_opts_del(opts);
}
if (gconf->server == NULL) {
gconf->server = g_new0(SocketAddressList, 1);
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
gconf->server->value = gsconf;
curr = gconf->server;
} else {
curr->next = g_new0(SocketAddressList, 1);
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
curr->next->value = gsconf;
curr = curr->next;
}
gsconf = NULL;
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
qobject_unref(backing_options);
backing_options = NULL;
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
g_free(str);
str = NULL;
}
return 0;
out:
error_propagate(errp, local_err);
qapi_free_SocketAddress(gsconf);
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
qemu_opts_del(opts);
g_free(str);
qobject_unref(backing_options);
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
errno = EINVAL;
return -errno;
}
/* Converts options given in @filename and the @options QDict into the QAPI
* object @gconf. */
static int qemu_gluster_parse(BlockdevOptionsGluster *gconf,
const char *filename,
QDict *options, Error **errp)
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
{
int ret;
if (filename) {
ret = qemu_gluster_parse_uri(gconf, filename);
if (ret < 0) {
error_setg(errp, "invalid URI %s", filename);
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
error_append_hint(errp, "Usage: file=gluster[+transport]://"
"[host[:port]]volume/path[?socket=...]"
"[,file.debug=N]"
"[,file.logfile=/path/filename.log]\n");
return ret;
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
}
} else {
ret = qemu_gluster_parse_json(gconf, options, errp);
if (ret < 0) {
error_append_hint(errp, "Usage: "
"-drive driver=qcow2,file.driver=gluster,"
"file.volume=testvol,file.path=/path/a.qcow2"
"[,file.debug=9]"
"[,file.logfile=/path/filename.log],"
"file.server.0.type=inet,"
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
"file.server.0.host=1.2.3.4,"
"file.server.0.port=24007,"
"file.server.1.transport=unix,"
"file.server.1.path=/var/run/glusterd.socket ..."
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
"\n");
return ret;
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
}
}
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
return 0;
}
static struct glfs *qemu_gluster_init(BlockdevOptionsGluster *gconf,
const char *filename,
QDict *options, Error **errp)
{
int ret;
ret = qemu_gluster_parse(gconf, filename, options, errp);
if (ret < 0) {
errno = -ret;
return NULL;
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
}
return qemu_gluster_glfs_init(gconf, errp);
}
/*
* AIO callback routine called from GlusterFS thread.
*/
static void gluster_finish_aiocb(struct glfs_fd *fd, ssize_t ret,
#ifdef CONFIG_GLUSTERFS_IOCB_HAS_STAT
struct glfs_stat *pre, struct glfs_stat *post,
#endif
void *arg)
{
GlusterAIOCB *acb = (GlusterAIOCB *)arg;
if (!ret || ret == acb->size) {
acb->ret = 0; /* Success */
} else if (ret < 0) {
acb->ret = -errno; /* Read/Write failed */
} else {
acb->ret = -EIO; /* Partial read/write - fail it */
}
aio_co_schedule(acb->aio_context, acb->coroutine);
}
static void qemu_gluster_parse_flags(int bdrv_flags, int *open_flags)
{
assert(open_flags != NULL);
*open_flags |= O_BINARY;
if (bdrv_flags & BDRV_O_RDWR) {
*open_flags |= O_RDWR;
} else {
*open_flags |= O_RDONLY;
}
if ((bdrv_flags & BDRV_O_NOCACHE)) {
*open_flags |= O_DIRECT;
}
}
/*
* Do SEEK_DATA/HOLE to detect if it is functional. Older broken versions of
* gfapi incorrectly return the current offset when SEEK_DATA/HOLE is used.
* - Corrected versions return -1 and set errno to EINVAL.
* - Versions that support SEEK_DATA/HOLE correctly, will return -1 and set
* errno to ENXIO when SEEK_DATA is called with a position of EOF.
*/
static bool qemu_gluster_test_seek(struct glfs_fd *fd)
{
off_t ret = 0;
#if defined SEEK_HOLE && defined SEEK_DATA
off_t eof;
eof = glfs_lseek(fd, 0, SEEK_END);
if (eof < 0) {
/* this should never occur */
return false;
}
/* this should always fail with ENXIO if SEEK_DATA is supported */
ret = glfs_lseek(fd, eof, SEEK_DATA);
#endif
return (ret < 0) && (errno == ENXIO);
}
static int qemu_gluster_open(BlockDriverState *bs, QDict *options,
int bdrv_flags, Error **errp)
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
{
BDRVGlusterState *s = bs->opaque;
int open_flags = 0;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
int ret = 0;
BlockdevOptionsGluster *gconf = NULL;
QemuOpts *opts;
Error *local_err = NULL;
const char *filename, *logfile;
opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
qemu_opts_absorb_qdict(opts, options, &local_err);
if (local_err) {
error_propagate(errp, local_err);
ret = -EINVAL;
goto out;
}
filename = qemu_opt_get(opts, GLUSTER_OPT_FILENAME);
s->debug = qemu_opt_get_number(opts, GLUSTER_OPT_DEBUG,
GLUSTER_DEBUG_DEFAULT);
if (s->debug < 0) {
s->debug = 0;
} else if (s->debug > GLUSTER_DEBUG_MAX) {
s->debug = GLUSTER_DEBUG_MAX;
}
gconf = g_new0(BlockdevOptionsGluster, 1);
gconf->debug = s->debug;
gconf->has_debug = true;
logfile = qemu_opt_get(opts, GLUSTER_OPT_LOGFILE);
s->logfile = g_strdup(logfile ? logfile : GLUSTER_LOGFILE_DEFAULT);
gconf->logfile = g_strdup(s->logfile);
gconf->has_logfile = true;
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
s->glfs = qemu_gluster_init(gconf, filename, options, errp);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
if (!s->glfs) {
ret = -errno;
goto out;
}
#ifdef CONFIG_GLUSTERFS_XLATOR_OPT
/* Without this, if fsync fails for a recoverable reason (for instance,
* ENOSPC), gluster will dump its cache, preventing retries. This means
* almost certain data loss. Not all gluster versions support the
* 'resync-failed-syncs-after-fsync' key value, but there is no way to
* discover during runtime if it is supported (this api returns success for
* unknown key/value pairs) */
ret = glfs_set_xlator_option(s->glfs, "*-write-behind",
"resync-failed-syncs-after-fsync",
"on");
if (ret < 0) {
error_setg_errno(errp, errno, "Unable to set xlator key/value pair");
ret = -errno;
goto out;
}
#endif
qemu_gluster_parse_flags(bdrv_flags, &open_flags);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
s->fd = glfs_open(s->glfs, gconf->path, open_flags);
ret = s->fd ? 0 : -errno;
if (ret == -EACCES || ret == -EROFS) {
/* Try to degrade to read-only, but if it doesn't work, still use the
* normal error message. */
if (bdrv_apply_auto_read_only(bs, NULL, NULL) == 0) {
open_flags = (open_flags & ~O_RDWR) | O_RDONLY;
s->fd = glfs_open(s->glfs, gconf->path, open_flags);
ret = s->fd ? 0 : -errno;
}
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
}
s->supports_seek_data = qemu_gluster_test_seek(s->fd);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
out:
qemu_opts_del(opts);
qapi_free_BlockdevOptionsGluster(gconf);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
if (!ret) {
return ret;
}
g_free(s->logfile);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
if (s->fd) {
glfs_close(s->fd);
}
glfs_clear_preopened(s->glfs);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
return ret;
}
static void qemu_gluster_refresh_limits(BlockDriverState *bs, Error **errp)
{
bs->bl.max_transfer = GLUSTER_MAX_TRANSFER;
}
static int qemu_gluster_reopen_prepare(BDRVReopenState *state,
BlockReopenQueue *queue, Error **errp)
{
int ret = 0;
BDRVGlusterState *s;
BDRVGlusterReopenState *reop_s;
BlockdevOptionsGluster *gconf;
int open_flags = 0;
assert(state != NULL);
assert(state->bs != NULL);
s = state->bs->opaque;
state->opaque = g_new0(BDRVGlusterReopenState, 1);
reop_s = state->opaque;
qemu_gluster_parse_flags(state->flags, &open_flags);
gconf = g_new0(BlockdevOptionsGluster, 1);
gconf->debug = s->debug;
gconf->has_debug = true;
gconf->logfile = g_strdup(s->logfile);
gconf->has_logfile = true;
/*
* If 'state->bs->exact_filename' is empty, 'state->options' should contain
* the JSON parameters already parsed.
*/
if (state->bs->exact_filename[0] != '\0') {
reop_s->glfs = qemu_gluster_init(gconf, state->bs->exact_filename, NULL,
errp);
} else {
reop_s->glfs = qemu_gluster_init(gconf, NULL, state->options, errp);
}
if (reop_s->glfs == NULL) {
ret = -errno;
goto exit;
}
#ifdef CONFIG_GLUSTERFS_XLATOR_OPT
ret = glfs_set_xlator_option(reop_s->glfs, "*-write-behind",
"resync-failed-syncs-after-fsync", "on");
if (ret < 0) {
error_setg_errno(errp, errno, "Unable to set xlator key/value pair");
ret = -errno;
goto exit;
}
#endif
reop_s->fd = glfs_open(reop_s->glfs, gconf->path, open_flags);
if (reop_s->fd == NULL) {
/* reops->glfs will be cleaned up in _abort */
ret = -errno;
goto exit;
}
exit:
/* state->opaque will be freed in either the _abort or _commit */
qapi_free_BlockdevOptionsGluster(gconf);
return ret;
}
static void qemu_gluster_reopen_commit(BDRVReopenState *state)
{
BDRVGlusterReopenState *reop_s = state->opaque;
BDRVGlusterState *s = state->bs->opaque;
/* close the old */
if (s->fd) {
glfs_close(s->fd);
}
glfs_clear_preopened(s->glfs);
/* use the newly opened image / connection */
s->fd = reop_s->fd;
s->glfs = reop_s->glfs;
g_free(state->opaque);
state->opaque = NULL;
return;
}
static void qemu_gluster_reopen_abort(BDRVReopenState *state)
{
BDRVGlusterReopenState *reop_s = state->opaque;
if (reop_s == NULL) {
return;
}
if (reop_s->fd) {
glfs_close(reop_s->fd);
}
glfs_clear_preopened(reop_s->glfs);
g_free(state->opaque);
state->opaque = NULL;
return;
}
#ifdef CONFIG_GLUSTERFS_ZEROFILL
static coroutine_fn int qemu_gluster_co_pwrite_zeroes(BlockDriverState *bs,
int64_t offset,
int size,
BdrvRequestFlags flags)
{
int ret;
GlusterAIOCB acb;
BDRVGlusterState *s = bs->opaque;
acb.size = size;
acb.ret = 0;
acb.coroutine = qemu_coroutine_self();
acb.aio_context = bdrv_get_aio_context(bs);
ret = glfs_zerofill_async(s->fd, offset, size, gluster_finish_aiocb, &acb);
if (ret < 0) {
return -errno;
}
qemu_coroutine_yield();
return acb.ret;
}
#endif
static int qemu_gluster_do_truncate(struct glfs_fd *fd, int64_t offset,
PreallocMode prealloc, Error **errp)
{
int64_t current_length;
current_length = glfs_lseek(fd, 0, SEEK_END);
if (current_length < 0) {
error_setg_errno(errp, errno, "Failed to determine current size");
return -errno;
}
if (current_length > offset && prealloc != PREALLOC_MODE_OFF) {
error_setg(errp, "Cannot use preallocation for shrinking files");
return -ENOTSUP;
}
if (current_length == offset) {
return 0;
}
switch (prealloc) {
#ifdef CONFIG_GLUSTERFS_FALLOCATE
case PREALLOC_MODE_FALLOC:
if (glfs_fallocate(fd, 0, current_length, offset - current_length)) {
error_setg_errno(errp, errno, "Could not preallocate data");
return -errno;
}
break;
#endif /* CONFIG_GLUSTERFS_FALLOCATE */
#ifdef CONFIG_GLUSTERFS_ZEROFILL
case PREALLOC_MODE_FULL:
if (glfs_ftruncate(fd, offset)) {
error_setg_errno(errp, errno, "Could not resize file");
return -errno;
}
if (glfs_zerofill(fd, current_length, offset - current_length)) {
error_setg_errno(errp, errno, "Could not zerofill the new area");
return -errno;
}
break;
#endif /* CONFIG_GLUSTERFS_ZEROFILL */
case PREALLOC_MODE_OFF:
if (glfs_ftruncate(fd, offset)) {
error_setg_errno(errp, errno, "Could not resize file");
return -errno;
}
break;
default:
error_setg(errp, "Unsupported preallocation mode: %s",
PreallocMode_str(prealloc));
return -EINVAL;
}
return 0;
}
static int qemu_gluster_co_create(BlockdevCreateOptions *options,
Error **errp)
{
BlockdevCreateOptionsGluster *opts = &options->u.gluster;
struct glfs *glfs;
struct glfs_fd *fd = NULL;
int ret = 0;
assert(options->driver == BLOCKDEV_DRIVER_GLUSTER);
glfs = qemu_gluster_glfs_init(opts->location, errp);
if (!glfs) {
ret = -errno;
goto out;
}
fd = glfs_creat(glfs, opts->location->path,
O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, S_IRUSR | S_IWUSR);
if (!fd) {
ret = -errno;
goto out;
}
ret = qemu_gluster_do_truncate(fd, opts->size, opts->preallocation, errp);
out:
if (fd) {
if (glfs_close(fd) != 0 && ret == 0) {
ret = -errno;
}
}
glfs_clear_preopened(glfs);
return ret;
}
static int coroutine_fn qemu_gluster_co_create_opts(const char *filename,
QemuOpts *opts,
Error **errp)
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
{
BlockdevCreateOptions *options;
BlockdevCreateOptionsGluster *gopts;
BlockdevOptionsGluster *gconf;
char *tmp = NULL;
Error *local_err = NULL;
int ret;
options = g_new0(BlockdevCreateOptions, 1);
options->driver = BLOCKDEV_DRIVER_GLUSTER;
gopts = &options->u.gluster;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
gconf = g_new0(BlockdevOptionsGluster, 1);
gopts->location = gconf;
gopts->size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
BDRV_SECTOR_SIZE);
tmp = qemu_opt_get_del(opts, BLOCK_OPT_PREALLOC);
gopts->preallocation = qapi_enum_parse(&PreallocMode_lookup, tmp,
PREALLOC_MODE_OFF, &local_err);
g_free(tmp);
if (local_err) {
error_propagate(errp, local_err);
ret = -EINVAL;
goto fail;
}
gconf->debug = qemu_opt_get_number_del(opts, GLUSTER_OPT_DEBUG,
GLUSTER_DEBUG_DEFAULT);
if (gconf->debug < 0) {
gconf->debug = 0;
} else if (gconf->debug > GLUSTER_DEBUG_MAX) {
gconf->debug = GLUSTER_DEBUG_MAX;
}
gconf->has_debug = true;
gconf->logfile = qemu_opt_get_del(opts, GLUSTER_OPT_LOGFILE);
if (!gconf->logfile) {
gconf->logfile = g_strdup(GLUSTER_LOGFILE_DEFAULT);
}
gconf->has_logfile = true;
ret = qemu_gluster_parse(gconf, filename, NULL, errp);
if (ret < 0) {
goto fail;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
}
ret = qemu_gluster_co_create(options, errp);
if (ret < 0) {
goto fail;
}
ret = 0;
fail:
qapi_free_BlockdevCreateOptions(options);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
return ret;
}
static coroutine_fn int qemu_gluster_co_rw(BlockDriverState *bs,
int64_t sector_num, int nb_sectors,
QEMUIOVector *qiov, int write)
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
{
int ret;
GlusterAIOCB acb;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
BDRVGlusterState *s = bs->opaque;
size_t size = nb_sectors * BDRV_SECTOR_SIZE;
off_t offset = sector_num * BDRV_SECTOR_SIZE;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
acb.size = size;
acb.ret = 0;
acb.coroutine = qemu_coroutine_self();
acb.aio_context = bdrv_get_aio_context(bs);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
if (write) {
ret = glfs_pwritev_async(s->fd, qiov->iov, qiov->niov, offset, 0,
gluster_finish_aiocb, &acb);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
} else {
ret = glfs_preadv_async(s->fd, qiov->iov, qiov->niov, offset, 0,
gluster_finish_aiocb, &acb);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
}
if (ret < 0) {
return -errno;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
}
qemu_coroutine_yield();
return acb.ret;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
}
static coroutine_fn int qemu_gluster_co_truncate(BlockDriverState *bs,
int64_t offset,
bool exact,
PreallocMode prealloc,
Error **errp)
{
BDRVGlusterState *s = bs->opaque;
return qemu_gluster_do_truncate(s->fd, offset, prealloc, errp);
}
static coroutine_fn int qemu_gluster_co_readv(BlockDriverState *bs,
int64_t sector_num,
int nb_sectors,
QEMUIOVector *qiov)
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
{
return qemu_gluster_co_rw(bs, sector_num, nb_sectors, qiov, 0);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
}
static coroutine_fn int qemu_gluster_co_writev(BlockDriverState *bs,
int64_t sector_num,
int nb_sectors,
QEMUIOVector *qiov,
int flags)
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
{
assert(!flags);
return qemu_gluster_co_rw(bs, sector_num, nb_sectors, qiov, 1);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
}
static void qemu_gluster_close(BlockDriverState *bs)
{
BDRVGlusterState *s = bs->opaque;
g_free(s->logfile);
if (s->fd) {
glfs_close(s->fd);
s->fd = NULL;
}
glfs_clear_preopened(s->glfs);
}
static coroutine_fn int qemu_gluster_co_flush_to_disk(BlockDriverState *bs)
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
{
int ret;
GlusterAIOCB acb;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
BDRVGlusterState *s = bs->opaque;
acb.size = 0;
acb.ret = 0;
acb.coroutine = qemu_coroutine_self();
acb.aio_context = bdrv_get_aio_context(bs);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
ret = glfs_fsync_async(s->fd, gluster_finish_aiocb, &acb);
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
if (ret < 0) {
ret = -errno;
goto error;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
}
qemu_coroutine_yield();
if (acb.ret < 0) {
ret = acb.ret;
goto error;
}
return acb.ret;
error:
/* Some versions of Gluster (3.5.6 -> 3.5.8?) will not retain its cache
* after a fsync failure, so we have no way of allowing the guest to safely
* continue. Gluster versions prior to 3.5.6 don't retain the cache
* either, but will invalidate the fd on error, so this is again our only
* option.
*
* The 'resync-failed-syncs-after-fsync' xlator option for the
* write-behind cache will cause later gluster versions to retain its
* cache after error, so long as the fd remains open. However, we
* currently have no way of knowing if this option is supported.
*
* TODO: Once gluster provides a way for us to determine if the option
* is supported, bypass the closure and setting drv to NULL. */
qemu_gluster_close(bs);
bs->drv = NULL;
return ret;
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
}
#ifdef CONFIG_GLUSTERFS_DISCARD
static coroutine_fn int qemu_gluster_co_pdiscard(BlockDriverState *bs,
int64_t offset, int size)
{
int ret;
GlusterAIOCB acb;
BDRVGlusterState *s = bs->opaque;
acb.size = 0;
acb.ret = 0;
acb.coroutine = qemu_coroutine_self();
acb.aio_context = bdrv_get_aio_context(bs);
ret = glfs_discard_async(s->fd, offset, size, gluster_finish_aiocb, &acb);
if (ret < 0) {
return -errno;
}
qemu_coroutine_yield();
return acb.ret;
}
#endif
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
static int64_t qemu_gluster_getlength(BlockDriverState *bs)
{
BDRVGlusterState *s = bs->opaque;
int64_t ret;
ret = glfs_lseek(s->fd, 0, SEEK_END);
if (ret < 0) {
return -errno;
} else {
return ret;
}
}
static int64_t qemu_gluster_allocated_file_size(BlockDriverState *bs)
{
BDRVGlusterState *s = bs->opaque;
struct stat st;
int ret;
ret = glfs_fstat(s->fd, &st);
if (ret < 0) {
return -errno;
} else {
return st.st_blocks * 512;
}
}
static int qemu_gluster_has_zero_init(BlockDriverState *bs)
{
/* GlusterFS volume could be backed by a block device */
return 0;
}
/*
* Find allocation range in @bs around offset @start.
* May change underlying file descriptor's file offset.
* If @start is not in a hole, store @start in @data, and the
* beginning of the next hole in @hole, and return 0.
* If @start is in a non-trailing hole, store @start in @hole and the
* beginning of the next non-hole in @data, and return 0.
* If @start is in a trailing hole or beyond EOF, return -ENXIO.
* If we can't find out, return a negative errno other than -ENXIO.
*
* (Shamefully copied from file-posix.c, only minuscule adaptions.)
*/
static int find_allocation(BlockDriverState *bs, off_t start,
off_t *data, off_t *hole)
{
BDRVGlusterState *s = bs->opaque;
if (!s->supports_seek_data) {
goto exit;
}
#if defined SEEK_HOLE && defined SEEK_DATA
off_t offs;
/*
* SEEK_DATA cases:
* D1. offs == start: start is in data
* D2. offs > start: start is in a hole, next data at offs
* D3. offs < 0, errno = ENXIO: either start is in a trailing hole
* or start is beyond EOF
* If the latter happens, the file has been truncated behind
* our back since we opened it. All bets are off then.
* Treating like a trailing hole is simplest.
* D4. offs < 0, errno != ENXIO: we learned nothing
*/
offs = glfs_lseek(s->fd, start, SEEK_DATA);
if (offs < 0) {
return -errno; /* D3 or D4 */
}
block/gluster: glfs_lseek() workaround On current released versions of glusterfs, glfs_lseek() will sometimes return invalid values for SEEK_DATA or SEEK_HOLE. For SEEK_DATA and SEEK_HOLE, the returned value should be >= the passed offset, or < 0 in the case of error: LSEEK(2): off_t lseek(int fd, off_t offset, int whence); [...] SEEK_HOLE Adjust the file offset to the next hole in the file greater than or equal to offset. If offset points into the middle of a hole, then the file offset is set to offset. If there is no hole past offset, then the file offset is adjusted to the end of the file (i.e., there is an implicit hole at the end of any file). [...] RETURN VALUE Upon successful completion, lseek() returns the resulting offset location as measured in bytes from the beginning of the file. On error, the value (off_t) -1 is returned and errno is set to indicate the error However, occasionally glfs_lseek() for SEEK_HOLE/DATA will return a value less than the passed offset, yet greater than zero. For instance, here are example values observed from this call: offs = glfs_lseek(s->fd, start, SEEK_HOLE); if (offs < 0) { return -errno; /* D1 and (H3 or H4) */ } start == 7608336384 offs == 7607877632 This causes QEMU to abort on the assert test. When this value is returned, errno is also 0. This is a reported and known bug to glusterfs: https://bugzilla.redhat.com/show_bug.cgi?id=1425293 Although this is being fixed in gluster, we still should work around it in QEMU, given that multiple released versions of gluster behave this way. This patch treats the return case of (offs < start) the same as if an error value other than ENXIO is returned; we will assume we learned nothing, and there are no holes in the file. Signed-off-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> Message-id: 87c0140e9407c08f6e74b04131b610f2e27c014c.1495560397.git.jcody@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2017-05-23 19:27:50 +02:00
if (offs < start) {
/* This is not a valid return by lseek(). We are safe to just return
* -EIO in this case, and we'll treat it like D4. Unfortunately some
* versions of gluster server will return offs < start, so an assert
* here will unnecessarily abort QEMU. */
return -EIO;
}
if (offs > start) {
/* D2: in hole, next data at offs */
*hole = start;
*data = offs;
return 0;
}
/* D1: in data, end not yet known */
/*
* SEEK_HOLE cases:
* H1. offs == start: start is in a hole
* If this happens here, a hole has been dug behind our back
* since the previous lseek().
* H2. offs > start: either start is in data, next hole at offs,
* or start is in trailing hole, EOF at offs
* Linux treats trailing holes like any other hole: offs ==
* start. Solaris seeks to EOF instead: offs > start (blech).
* If that happens here, a hole has been dug behind our back
* since the previous lseek().
* H3. offs < 0, errno = ENXIO: start is beyond EOF
* If this happens, the file has been truncated behind our
* back since we opened it. Treat it like a trailing hole.
* H4. offs < 0, errno != ENXIO: we learned nothing
* Pretend we know nothing at all, i.e. "forget" about D1.
*/
offs = glfs_lseek(s->fd, start, SEEK_HOLE);
if (offs < 0) {
return -errno; /* D1 and (H3 or H4) */
}
block/gluster: glfs_lseek() workaround On current released versions of glusterfs, glfs_lseek() will sometimes return invalid values for SEEK_DATA or SEEK_HOLE. For SEEK_DATA and SEEK_HOLE, the returned value should be >= the passed offset, or < 0 in the case of error: LSEEK(2): off_t lseek(int fd, off_t offset, int whence); [...] SEEK_HOLE Adjust the file offset to the next hole in the file greater than or equal to offset. If offset points into the middle of a hole, then the file offset is set to offset. If there is no hole past offset, then the file offset is adjusted to the end of the file (i.e., there is an implicit hole at the end of any file). [...] RETURN VALUE Upon successful completion, lseek() returns the resulting offset location as measured in bytes from the beginning of the file. On error, the value (off_t) -1 is returned and errno is set to indicate the error However, occasionally glfs_lseek() for SEEK_HOLE/DATA will return a value less than the passed offset, yet greater than zero. For instance, here are example values observed from this call: offs = glfs_lseek(s->fd, start, SEEK_HOLE); if (offs < 0) { return -errno; /* D1 and (H3 or H4) */ } start == 7608336384 offs == 7607877632 This causes QEMU to abort on the assert test. When this value is returned, errno is also 0. This is a reported and known bug to glusterfs: https://bugzilla.redhat.com/show_bug.cgi?id=1425293 Although this is being fixed in gluster, we still should work around it in QEMU, given that multiple released versions of gluster behave this way. This patch treats the return case of (offs < start) the same as if an error value other than ENXIO is returned; we will assume we learned nothing, and there are no holes in the file. Signed-off-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Niels de Vos <ndevos@redhat.com> Message-id: 87c0140e9407c08f6e74b04131b610f2e27c014c.1495560397.git.jcody@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2017-05-23 19:27:50 +02:00
if (offs < start) {
/* This is not a valid return by lseek(). We are safe to just return
* -EIO in this case, and we'll treat it like H4. Unfortunately some
* versions of gluster server will return offs < start, so an assert
* here will unnecessarily abort QEMU. */
return -EIO;
}
if (offs > start) {
/*
* D1 and H2: either in data, next hole at offs, or it was in
* data but is now in a trailing hole. In the latter case,
* all bets are off. Treating it as if it there was data all
* the way to EOF is safe, so simply do that.
*/
*data = start;
*hole = offs;
return 0;
}
/* D1 and H1 */
return -EBUSY;
#endif
exit:
return -ENOTSUP;
}
/*
* Returns the allocation status of the specified offset.
*
* The block layer guarantees 'offset' and 'bytes' are within bounds.
*
* 'pnum' is set to the number of bytes (including and immediately following
* the specified offset) that are known to be in the same
* allocated/unallocated state.
*
* 'bytes' is the max value 'pnum' should be set to.
*
* (Based on raw_co_block_status() from file-posix.c.)
*/
static int coroutine_fn qemu_gluster_co_block_status(BlockDriverState *bs,
bool want_zero,
int64_t offset,
int64_t bytes,
int64_t *pnum,
int64_t *map,
BlockDriverState **file)
{
BDRVGlusterState *s = bs->opaque;
off_t data = 0, hole = 0;
int ret = -EINVAL;
if (!s->fd) {
return ret;
}
if (!want_zero) {
*pnum = bytes;
*map = offset;
*file = bs;
return BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID;
}
ret = find_allocation(bs, offset, &data, &hole);
if (ret == -ENXIO) {
/* Trailing hole */
*pnum = bytes;
ret = BDRV_BLOCK_ZERO;
} else if (ret < 0) {
/* No info available, so pretend there are no holes */
*pnum = bytes;
ret = BDRV_BLOCK_DATA;
} else if (data == offset) {
/* On a data extent, compute bytes to the end of the extent,
* possibly including a partial sector at EOF. */
*pnum = MIN(bytes, hole - offset);
ret = BDRV_BLOCK_DATA;
} else {
/* On a hole, compute bytes to the beginning of the next extent. */
assert(hole == offset);
*pnum = MIN(bytes, data - offset);
ret = BDRV_BLOCK_ZERO;
}
*map = offset;
*file = bs;
return ret | BDRV_BLOCK_OFFSET_VALID;
}
static const char *const gluster_strong_open_opts[] = {
GLUSTER_OPT_VOLUME,
GLUSTER_OPT_PATH,
GLUSTER_OPT_TYPE,
GLUSTER_OPT_SERVER_PATTERN,
GLUSTER_OPT_HOST,
GLUSTER_OPT_PORT,
GLUSTER_OPT_TO,
GLUSTER_OPT_IPV4,
GLUSTER_OPT_IPV6,
GLUSTER_OPT_SOCKET,
NULL
};
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
static BlockDriver bdrv_gluster = {
.format_name = "gluster",
.protocol_name = "gluster",
.instance_size = sizeof(BDRVGlusterState),
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
.bdrv_needs_filename = false,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
.bdrv_file_open = qemu_gluster_open,
.bdrv_reopen_prepare = qemu_gluster_reopen_prepare,
.bdrv_reopen_commit = qemu_gluster_reopen_commit,
.bdrv_reopen_abort = qemu_gluster_reopen_abort,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
.bdrv_close = qemu_gluster_close,
.bdrv_co_create = qemu_gluster_co_create,
.bdrv_co_create_opts = qemu_gluster_co_create_opts,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
.bdrv_getlength = qemu_gluster_getlength,
.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
.bdrv_co_truncate = qemu_gluster_co_truncate,
.bdrv_co_readv = qemu_gluster_co_readv,
.bdrv_co_writev = qemu_gluster_co_writev,
.bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk,
.bdrv_has_zero_init = qemu_gluster_has_zero_init,
.bdrv_has_zero_init_truncate = qemu_gluster_has_zero_init,
#ifdef CONFIG_GLUSTERFS_DISCARD
.bdrv_co_pdiscard = qemu_gluster_co_pdiscard,
#endif
#ifdef CONFIG_GLUSTERFS_ZEROFILL
.bdrv_co_pwrite_zeroes = qemu_gluster_co_pwrite_zeroes,
#endif
.bdrv_co_block_status = qemu_gluster_co_block_status,
.bdrv_refresh_limits = qemu_gluster_refresh_limits,
.create_opts = &qemu_gluster_create_opts,
.strong_runtime_opts = gluster_strong_open_opts,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
};
static BlockDriver bdrv_gluster_tcp = {
.format_name = "gluster",
.protocol_name = "gluster+tcp",
.instance_size = sizeof(BDRVGlusterState),
block/gluster: add support for multiple gluster servers This patch adds a way to specify multiple volfile servers to the gluster block backend of QEMU with tcp|rdma transport types and their port numbers. Problem: Currently VM Image on gluster volume is specified like this: file=gluster[+tcp]://host[:port]/testvol/a.img Say we have three hosts in a trusted pool with replica 3 volume in action. When the host mentioned in the command above goes down for some reason, the other two hosts are still available. But there's currently no way to tell QEMU about them. Solution: New way of specifying VM Image on gluster volume with volfile servers: (We still support old syntax to maintain backward compatibility) Basic command line syntax looks like: Pattern I: -drive driver=gluster, volume=testvol,path=/path/a.raw,[debug=N,] server.0.type=tcp, server.0.host=1.2.3.4, server.0.port=24007, server.1.type=unix, server.1.socket=/path/socketfile Pattern II: 'json:{"driver":"qcow2","file":{"driver":"gluster", "volume":"testvol","path":"/path/a.qcow2",["debug":N,] "server":[{hostinfo_1}, ...{hostinfo_N}]}}' driver => 'gluster' (protocol name) volume => name of gluster volume where our VM image resides path => absolute path of image in gluster volume [debug] => libgfapi loglevel [(0 - 9) default 4 -> Error] {hostinfo} => {{type:"tcp",host:"1.2.3.4"[,port=24007]}, {type:"unix",socket:"/path/sockfile"}} type => transport type used to connect to gluster management daemon, it can be tcp|unix host => host address (hostname/ipv4/ipv6 addresses/socket path) port => port number on which glusterd is listening. socket => path to socket file Examples: 1. -drive driver=qcow2,file.driver=gluster, file.volume=testvol,file.path=/path/a.qcow2,file.debug=9, file.server.0.type=tcp, file.server.0.host=1.2.3.4, file.server.0.port=24007, file.server.1.type=unix, file.server.1.socket=/var/run/glusterd.socket 2. 'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol", "path":"/path/a.qcow2","debug":9,"server": [{"type":"tcp","host":"1.2.3.4","port":"24007"}, {"type":"unix","socket":"/var/run/glusterd.socket"} ]}}' This patch gives a mechanism to provide all the server addresses, which are in replica set, so in case host1 is down VM can still boot from any of the active hosts. This is equivalent to the backup-volfile-servers option supported by mount.glusterfs (FUSE way of mounting gluster volume) credits: sincere thanks to all the supporters Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-07-19 18:57:33 +02:00
.bdrv_needs_filename = false,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
.bdrv_file_open = qemu_gluster_open,
.bdrv_reopen_prepare = qemu_gluster_reopen_prepare,
.bdrv_reopen_commit = qemu_gluster_reopen_commit,
.bdrv_reopen_abort = qemu_gluster_reopen_abort,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
.bdrv_close = qemu_gluster_close,
.bdrv_co_create = qemu_gluster_co_create,
.bdrv_co_create_opts = qemu_gluster_co_create_opts,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
.bdrv_getlength = qemu_gluster_getlength,
.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
.bdrv_co_truncate = qemu_gluster_co_truncate,
.bdrv_co_readv = qemu_gluster_co_readv,
.bdrv_co_writev = qemu_gluster_co_writev,
.bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk,
.bdrv_has_zero_init = qemu_gluster_has_zero_init,
.bdrv_has_zero_init_truncate = qemu_gluster_has_zero_init,
#ifdef CONFIG_GLUSTERFS_DISCARD
.bdrv_co_pdiscard = qemu_gluster_co_pdiscard,
#endif
#ifdef CONFIG_GLUSTERFS_ZEROFILL
.bdrv_co_pwrite_zeroes = qemu_gluster_co_pwrite_zeroes,
#endif
.bdrv_co_block_status = qemu_gluster_co_block_status,
.bdrv_refresh_limits = qemu_gluster_refresh_limits,
.create_opts = &qemu_gluster_create_opts,
.strong_runtime_opts = gluster_strong_open_opts,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
};
static BlockDriver bdrv_gluster_unix = {
.format_name = "gluster",
.protocol_name = "gluster+unix",
.instance_size = sizeof(BDRVGlusterState),
.bdrv_needs_filename = true,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
.bdrv_file_open = qemu_gluster_open,
.bdrv_reopen_prepare = qemu_gluster_reopen_prepare,
.bdrv_reopen_commit = qemu_gluster_reopen_commit,
.bdrv_reopen_abort = qemu_gluster_reopen_abort,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
.bdrv_close = qemu_gluster_close,
.bdrv_co_create = qemu_gluster_co_create,
.bdrv_co_create_opts = qemu_gluster_co_create_opts,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
.bdrv_getlength = qemu_gluster_getlength,
.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
.bdrv_co_truncate = qemu_gluster_co_truncate,
.bdrv_co_readv = qemu_gluster_co_readv,
.bdrv_co_writev = qemu_gluster_co_writev,
.bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk,
.bdrv_has_zero_init = qemu_gluster_has_zero_init,
.bdrv_has_zero_init_truncate = qemu_gluster_has_zero_init,
#ifdef CONFIG_GLUSTERFS_DISCARD
.bdrv_co_pdiscard = qemu_gluster_co_pdiscard,
#endif
#ifdef CONFIG_GLUSTERFS_ZEROFILL
.bdrv_co_pwrite_zeroes = qemu_gluster_co_pwrite_zeroes,
#endif
.bdrv_co_block_status = qemu_gluster_co_block_status,
.bdrv_refresh_limits = qemu_gluster_refresh_limits,
.create_opts = &qemu_gluster_create_opts,
.strong_runtime_opts = gluster_strong_open_opts,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
};
/* rdma is deprecated (actually never supported for volfile fetch).
* Let's maintain it for the protocol compatibility, to make sure things
* won't break immediately. For now, gluster+rdma will fall back to gluster+tcp
* protocol with a warning.
* TODO: remove gluster+rdma interface support
*/
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
static BlockDriver bdrv_gluster_rdma = {
.format_name = "gluster",
.protocol_name = "gluster+rdma",
.instance_size = sizeof(BDRVGlusterState),
.bdrv_needs_filename = true,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
.bdrv_file_open = qemu_gluster_open,
.bdrv_reopen_prepare = qemu_gluster_reopen_prepare,
.bdrv_reopen_commit = qemu_gluster_reopen_commit,
.bdrv_reopen_abort = qemu_gluster_reopen_abort,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
.bdrv_close = qemu_gluster_close,
.bdrv_co_create = qemu_gluster_co_create,
.bdrv_co_create_opts = qemu_gluster_co_create_opts,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
.bdrv_getlength = qemu_gluster_getlength,
.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
.bdrv_co_truncate = qemu_gluster_co_truncate,
.bdrv_co_readv = qemu_gluster_co_readv,
.bdrv_co_writev = qemu_gluster_co_writev,
.bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk,
.bdrv_has_zero_init = qemu_gluster_has_zero_init,
.bdrv_has_zero_init_truncate = qemu_gluster_has_zero_init,
#ifdef CONFIG_GLUSTERFS_DISCARD
.bdrv_co_pdiscard = qemu_gluster_co_pdiscard,
#endif
#ifdef CONFIG_GLUSTERFS_ZEROFILL
.bdrv_co_pwrite_zeroes = qemu_gluster_co_pwrite_zeroes,
#endif
.bdrv_co_block_status = qemu_gluster_co_block_status,
.bdrv_refresh_limits = qemu_gluster_refresh_limits,
.create_opts = &qemu_gluster_create_opts,
.strong_runtime_opts = gluster_strong_open_opts,
block: Support GlusterFS as a QEMU block backend. This patch adds gluster as the new block backend in QEMU. This gives QEMU the ability to boot VM images from gluster volumes. Its already possible to boot from VM images on gluster volumes using FUSE mount, but this patchset provides the ability to boot VM images from gluster volumes by by-passing the FUSE layer in gluster. This is made possible by using libgfapi routines to perform IO on gluster volumes directly. VM Image on gluster volume is specified like this: file=gluster[+transport]://[server[:port]]/volname/image[?socket=...] 'gluster' is the protocol. 'transport' specifies the transport type used to connect to gluster management daemon (glusterd). Valid transport types are tcp, unix and rdma. If a transport type isn't specified, then tcp type is assumed. 'server' specifies the server where the volume file specification for the given volume resides. This can be either hostname, ipv4 address or ipv6 address. ipv6 address needs to be within square brackets [ ]. If transport type is 'unix', then 'server' field should not be specifed. The 'socket' field needs to be populated with the path to unix domain socket. 'port' is the port number on which glusterd is listening. This is optional and if not specified, QEMU will send 0 which will make gluster to use the default port. If the transport type is unix, then 'port' should not be specified. 'volname' is the name of the gluster volume which contains the VM image. 'image' is the path to the actual VM image that resides on gluster volume. Examples: file=gluster://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4/testvol/a.img file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket file=gluster+rdma://1.2.3.4:24007/testvol/a.img Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2012-09-27 16:00:32 +02:00
};
static void bdrv_gluster_init(void)
{
bdrv_register(&bdrv_gluster_rdma);
bdrv_register(&bdrv_gluster_unix);
bdrv_register(&bdrv_gluster_tcp);
bdrv_register(&bdrv_gluster);
}
block_init(bdrv_gluster_init);