pnfs/flexfiles: Add the FlexFile Layout Driver
The flexfile layout is a new layout that extends the file layout. It is currently being drafted as a specification at https://datatracker.ietf.org/doc/draft-ietf-nfsv4-layout-types/ Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Tom Haynes <loghyr@primarydata.com> Signed-off-by: Tao Peng <bergwolf@primarydata.com>
This commit is contained in:
Tom Haynes
parent
5fadeb47dc
commit
d67ae825a5
|
|
@ -128,6 +128,11 @@ config PNFS_OBJLAYOUT
|
|||
depends on NFS_V4_1 && SCSI_OSD_ULD
|
||||
default NFS_V4
|
||||
|
||||
config PNFS_FLEXFILE_LAYOUT
|
||||
tristate
|
||||
depends on NFS_V4_1 && NFS_V3
|
||||
default m
|
||||
|
||||
config NFS_V4_1_IMPLEMENTATION_ID_DOMAIN
|
||||
string "NFSv4.1 Implementation ID Domain"
|
||||
depends on NFS_V4_1
|
||||
|
|
|
|||
|
|
@ -33,3 +33,4 @@ nfsv4-$(CONFIG_NFS_V4_2) += nfs42proc.o
|
|||
obj-$(CONFIG_PNFS_FILE_LAYOUT) += filelayout/
|
||||
obj-$(CONFIG_PNFS_OBJLAYOUT) += objlayout/
|
||||
obj-$(CONFIG_PNFS_BLOCK) += blocklayout/
|
||||
obj-$(CONFIG_PNFS_FLEXFILE_LAYOUT) += flexfilelayout/
|
||||
|
|
|
|||
|
|
@ -0,0 +1,5 @@
|
|||
#
|
||||
# Makefile for the pNFS Flexfile Layout Driver kernel module
|
||||
#
|
||||
obj-$(CONFIG_PNFS_FLEXFILE_LAYOUT) += nfs_layout_flexfiles.o
|
||||
nfs_layout_flexfiles-y := flexfilelayout.o flexfilelayoutdev.o
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,155 @@
|
|||
/*
|
||||
* NFSv4 flexfile layout driver data structures.
|
||||
*
|
||||
* Copyright (c) 2014, Primary Data, Inc. All rights reserved.
|
||||
*
|
||||
* Tao Peng <bergwolf@primarydata.com>
|
||||
*/
|
||||
|
||||
#ifndef FS_NFS_NFS4FLEXFILELAYOUT_H
|
||||
#define FS_NFS_NFS4FLEXFILELAYOUT_H
|
||||
|
||||
#include "../pnfs.h"
|
||||
|
||||
/* XXX: Let's filter out insanely large mirror count for now to avoid oom
|
||||
* due to network error etc. */
|
||||
#define NFS4_FLEXFILE_LAYOUT_MAX_MIRROR_CNT 4096
|
||||
|
||||
struct nfs4_ff_ds_version {
|
||||
u32 version;
|
||||
u32 minor_version;
|
||||
u32 rsize;
|
||||
u32 wsize;
|
||||
bool tightly_coupled;
|
||||
};
|
||||
|
||||
/* chained in global deviceid hlist */
|
||||
struct nfs4_ff_layout_ds {
|
||||
struct nfs4_deviceid_node id_node;
|
||||
u32 ds_versions_cnt;
|
||||
struct nfs4_ff_ds_version *ds_versions;
|
||||
struct nfs4_pnfs_ds *ds;
|
||||
};
|
||||
|
||||
struct nfs4_ff_layout_ds_err {
|
||||
struct list_head list; /* linked in mirror error_list */
|
||||
u64 offset;
|
||||
u64 length;
|
||||
int status;
|
||||
enum nfs_opnum4 opnum;
|
||||
nfs4_stateid stateid;
|
||||
struct nfs4_deviceid deviceid;
|
||||
};
|
||||
|
||||
struct nfs4_ff_layout_mirror {
|
||||
u32 ds_count;
|
||||
u32 efficiency;
|
||||
struct nfs4_ff_layout_ds *mirror_ds;
|
||||
u32 fh_versions_cnt;
|
||||
struct nfs_fh *fh_versions;
|
||||
nfs4_stateid stateid;
|
||||
struct nfs4_string user_name;
|
||||
struct nfs4_string group_name;
|
||||
u32 uid;
|
||||
u32 gid;
|
||||
struct rpc_cred *cred;
|
||||
spinlock_t lock;
|
||||
};
|
||||
|
||||
struct nfs4_ff_layout_segment {
|
||||
struct pnfs_layout_segment generic_hdr;
|
||||
u64 stripe_unit;
|
||||
u32 mirror_array_cnt;
|
||||
struct nfs4_ff_layout_mirror **mirror_array;
|
||||
};
|
||||
|
||||
struct nfs4_flexfile_layout {
|
||||
struct pnfs_layout_hdr generic_hdr;
|
||||
struct pnfs_ds_commit_info commit_info;
|
||||
struct list_head error_list; /* nfs4_ff_layout_ds_err */
|
||||
};
|
||||
|
||||
static inline struct nfs4_flexfile_layout *
|
||||
FF_LAYOUT_FROM_HDR(struct pnfs_layout_hdr *lo)
|
||||
{
|
||||
return container_of(lo, struct nfs4_flexfile_layout, generic_hdr);
|
||||
}
|
||||
|
||||
static inline struct nfs4_ff_layout_segment *
|
||||
FF_LAYOUT_LSEG(struct pnfs_layout_segment *lseg)
|
||||
{
|
||||
return container_of(lseg,
|
||||
struct nfs4_ff_layout_segment,
|
||||
generic_hdr);
|
||||
}
|
||||
|
||||
static inline struct nfs4_deviceid_node *
|
||||
FF_LAYOUT_DEVID_NODE(struct pnfs_layout_segment *lseg, u32 idx)
|
||||
{
|
||||
if (idx >= FF_LAYOUT_LSEG(lseg)->mirror_array_cnt ||
|
||||
FF_LAYOUT_LSEG(lseg)->mirror_array[idx] == NULL ||
|
||||
FF_LAYOUT_LSEG(lseg)->mirror_array[idx]->mirror_ds == NULL)
|
||||
return NULL;
|
||||
return &FF_LAYOUT_LSEG(lseg)->mirror_array[idx]->mirror_ds->id_node;
|
||||
}
|
||||
|
||||
static inline struct nfs4_ff_layout_ds *
|
||||
FF_LAYOUT_MIRROR_DS(struct nfs4_deviceid_node *node)
|
||||
{
|
||||
return container_of(node, struct nfs4_ff_layout_ds, id_node);
|
||||
}
|
||||
|
||||
static inline struct nfs4_ff_layout_mirror *
|
||||
FF_LAYOUT_COMP(struct pnfs_layout_segment *lseg, u32 idx)
|
||||
{
|
||||
if (idx >= FF_LAYOUT_LSEG(lseg)->mirror_array_cnt)
|
||||
return NULL;
|
||||
return FF_LAYOUT_LSEG(lseg)->mirror_array[idx];
|
||||
}
|
||||
|
||||
static inline u32
|
||||
FF_LAYOUT_MIRROR_COUNT(struct pnfs_layout_segment *lseg)
|
||||
{
|
||||
return FF_LAYOUT_LSEG(lseg)->mirror_array_cnt;
|
||||
}
|
||||
|
||||
static inline bool
|
||||
ff_layout_test_devid_unavailable(struct nfs4_deviceid_node *node)
|
||||
{
|
||||
return nfs4_test_deviceid_unavailable(node);
|
||||
}
|
||||
|
||||
static inline int
|
||||
nfs4_ff_layout_ds_version(struct pnfs_layout_segment *lseg, u32 ds_idx)
|
||||
{
|
||||
return FF_LAYOUT_COMP(lseg, ds_idx)->mirror_ds->ds_versions[0].version;
|
||||
}
|
||||
|
||||
struct nfs4_ff_layout_ds *
|
||||
nfs4_ff_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev,
|
||||
gfp_t gfp_flags);
|
||||
void nfs4_ff_layout_put_deviceid(struct nfs4_ff_layout_ds *mirror_ds);
|
||||
void nfs4_ff_layout_free_deviceid(struct nfs4_ff_layout_ds *mirror_ds);
|
||||
int ff_layout_track_ds_error(struct nfs4_flexfile_layout *flo,
|
||||
struct nfs4_ff_layout_mirror *mirror, u64 offset,
|
||||
u64 length, int status, enum nfs_opnum4 opnum,
|
||||
gfp_t gfp_flags);
|
||||
int ff_layout_encode_ds_ioerr(struct nfs4_flexfile_layout *flo,
|
||||
struct xdr_stream *xdr, int *count,
|
||||
const struct pnfs_layout_range *range);
|
||||
struct nfs_fh *
|
||||
nfs4_ff_layout_select_ds_fh(struct pnfs_layout_segment *lseg, u32 mirror_idx);
|
||||
|
||||
struct nfs4_pnfs_ds *
|
||||
nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx,
|
||||
bool fail_return);
|
||||
|
||||
struct rpc_clnt *
|
||||
nfs4_ff_find_or_create_ds_client(struct pnfs_layout_segment *lseg,
|
||||
u32 ds_idx,
|
||||
struct nfs_client *ds_clp,
|
||||
struct inode *inode);
|
||||
struct rpc_cred *ff_layout_get_ds_cred(struct pnfs_layout_segment *lseg,
|
||||
u32 ds_idx, struct rpc_cred *mdscred);
|
||||
bool ff_layout_has_available_ds(struct pnfs_layout_segment *lseg);
|
||||
#endif /* FS_NFS_NFS4FLEXFILELAYOUT_H */
|
||||
|
|
@ -0,0 +1,552 @@
|
|||
/*
|
||||
* Device operations for the pnfs nfs4 file layout driver.
|
||||
*
|
||||
* Copyright (c) 2014, Primary Data, Inc. All rights reserved.
|
||||
*
|
||||
* Tao Peng <bergwolf@primarydata.com>
|
||||
*/
|
||||
|
||||
#include <linux/nfs_fs.h>
|
||||
#include <linux/vmalloc.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/sunrpc/addr.h>
|
||||
|
||||
#include "../internal.h"
|
||||
#include "../nfs4session.h"
|
||||
#include "flexfilelayout.h"
|
||||
|
||||
#define NFSDBG_FACILITY NFSDBG_PNFS_LD
|
||||
|
||||
static unsigned int dataserver_timeo = NFS4_DEF_DS_TIMEO;
|
||||
static unsigned int dataserver_retrans = NFS4_DEF_DS_RETRANS;
|
||||
|
||||
void nfs4_ff_layout_put_deviceid(struct nfs4_ff_layout_ds *mirror_ds)
|
||||
{
|
||||
if (mirror_ds)
|
||||
nfs4_put_deviceid_node(&mirror_ds->id_node);
|
||||
}
|
||||
|
||||
void nfs4_ff_layout_free_deviceid(struct nfs4_ff_layout_ds *mirror_ds)
|
||||
{
|
||||
nfs4_print_deviceid(&mirror_ds->id_node.deviceid);
|
||||
nfs4_pnfs_ds_put(mirror_ds->ds);
|
||||
kfree(mirror_ds);
|
||||
}
|
||||
|
||||
/* Decode opaque device data and construct new_ds using it */
|
||||
struct nfs4_ff_layout_ds *
|
||||
nfs4_ff_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev,
|
||||
gfp_t gfp_flags)
|
||||
{
|
||||
struct xdr_stream stream;
|
||||
struct xdr_buf buf;
|
||||
struct page *scratch;
|
||||
struct list_head dsaddrs;
|
||||
struct nfs4_pnfs_ds_addr *da;
|
||||
struct nfs4_ff_layout_ds *new_ds = NULL;
|
||||
struct nfs4_ff_ds_version *ds_versions = NULL;
|
||||
u32 mp_count;
|
||||
u32 version_count;
|
||||
__be32 *p;
|
||||
int i, ret = -ENOMEM;
|
||||
|
||||
/* set up xdr stream */
|
||||
scratch = alloc_page(gfp_flags);
|
||||
if (!scratch)
|
||||
goto out_err;
|
||||
|
||||
new_ds = kzalloc(sizeof(struct nfs4_ff_layout_ds), gfp_flags);
|
||||
if (!new_ds)
|
||||
goto out_scratch;
|
||||
|
||||
nfs4_init_deviceid_node(&new_ds->id_node,
|
||||
server,
|
||||
&pdev->dev_id);
|
||||
INIT_LIST_HEAD(&dsaddrs);
|
||||
|
||||
xdr_init_decode_pages(&stream, &buf, pdev->pages, pdev->pglen);
|
||||
xdr_set_scratch_buffer(&stream, page_address(scratch), PAGE_SIZE);
|
||||
|
||||
/* multipath count */
|
||||
p = xdr_inline_decode(&stream, 4);
|
||||
if (unlikely(!p))
|
||||
goto out_err_drain_dsaddrs;
|
||||
mp_count = be32_to_cpup(p);
|
||||
dprintk("%s: multipath ds count %d\n", __func__, mp_count);
|
||||
|
||||
for (i = 0; i < mp_count; i++) {
|
||||
/* multipath ds */
|
||||
da = nfs4_decode_mp_ds_addr(server->nfs_client->cl_net,
|
||||
&stream, gfp_flags);
|
||||
if (da)
|
||||
list_add_tail(&da->da_node, &dsaddrs);
|
||||
}
|
||||
if (list_empty(&dsaddrs)) {
|
||||
dprintk("%s: no suitable DS addresses found\n",
|
||||
__func__);
|
||||
ret = -ENOMEDIUM;
|
||||
goto out_err_drain_dsaddrs;
|
||||
}
|
||||
|
||||
/* version count */
|
||||
p = xdr_inline_decode(&stream, 4);
|
||||
if (unlikely(!p))
|
||||
goto out_err_drain_dsaddrs;
|
||||
version_count = be32_to_cpup(p);
|
||||
dprintk("%s: version count %d\n", __func__, version_count);
|
||||
|
||||
ds_versions = kzalloc(version_count * sizeof(struct nfs4_ff_ds_version),
|
||||
gfp_flags);
|
||||
if (!ds_versions)
|
||||
goto out_scratch;
|
||||
|
||||
for (i = 0; i < version_count; i++) {
|
||||
/* 20 = version(4) + minor_version(4) + rsize(4) + wsize(4) +
|
||||
* tightly_coupled(4) */
|
||||
p = xdr_inline_decode(&stream, 20);
|
||||
if (unlikely(!p))
|
||||
goto out_err_drain_dsaddrs;
|
||||
ds_versions[i].version = be32_to_cpup(p++);
|
||||
ds_versions[i].minor_version = be32_to_cpup(p++);
|
||||
ds_versions[i].rsize = nfs_block_size(be32_to_cpup(p++), NULL);
|
||||
ds_versions[i].wsize = nfs_block_size(be32_to_cpup(p++), NULL);
|
||||
ds_versions[i].tightly_coupled = be32_to_cpup(p);
|
||||
|
||||
if (ds_versions[i].rsize > NFS_MAX_FILE_IO_SIZE)
|
||||
ds_versions[i].rsize = NFS_MAX_FILE_IO_SIZE;
|
||||
if (ds_versions[i].wsize > NFS_MAX_FILE_IO_SIZE)
|
||||
ds_versions[i].wsize = NFS_MAX_FILE_IO_SIZE;
|
||||
|
||||
if (ds_versions[i].version != 3 || ds_versions[i].minor_version != 0) {
|
||||
dprintk("%s: [%d] unsupported ds version %d-%d\n", __func__,
|
||||
i, ds_versions[i].version,
|
||||
ds_versions[i].minor_version);
|
||||
ret = -EPROTONOSUPPORT;
|
||||
goto out_err_drain_dsaddrs;
|
||||
}
|
||||
|
||||
dprintk("%s: [%d] vers %u minor_ver %u rsize %u wsize %u coupled %d\n",
|
||||
__func__, i, ds_versions[i].version,
|
||||
ds_versions[i].minor_version,
|
||||
ds_versions[i].rsize,
|
||||
ds_versions[i].wsize,
|
||||
ds_versions[i].tightly_coupled);
|
||||
}
|
||||
|
||||
new_ds->ds_versions = ds_versions;
|
||||
new_ds->ds_versions_cnt = version_count;
|
||||
|
||||
new_ds->ds = nfs4_pnfs_ds_add(&dsaddrs, gfp_flags);
|
||||
if (!new_ds->ds)
|
||||
goto out_err_drain_dsaddrs;
|
||||
|
||||
/* If DS was already in cache, free ds addrs */
|
||||
while (!list_empty(&dsaddrs)) {
|
||||
da = list_first_entry(&dsaddrs,
|
||||
struct nfs4_pnfs_ds_addr,
|
||||
da_node);
|
||||
list_del_init(&da->da_node);
|
||||
kfree(da->da_remotestr);
|
||||
kfree(da);
|
||||
}
|
||||
|
||||
__free_page(scratch);
|
||||
return new_ds;
|
||||
|
||||
out_err_drain_dsaddrs:
|
||||
while (!list_empty(&dsaddrs)) {
|
||||
da = list_first_entry(&dsaddrs, struct nfs4_pnfs_ds_addr,
|
||||
da_node);
|
||||
list_del_init(&da->da_node);
|
||||
kfree(da->da_remotestr);
|
||||
kfree(da);
|
||||
}
|
||||
|
||||
kfree(ds_versions);
|
||||
out_scratch:
|
||||
__free_page(scratch);
|
||||
out_err:
|
||||
kfree(new_ds);
|
||||
|
||||
dprintk("%s ERROR: returning %d\n", __func__, ret);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static u64
|
||||
end_offset(u64 start, u64 len)
|
||||
{
|
||||
u64 end;
|
||||
|
||||
end = start + len;
|
||||
return end >= start ? end : NFS4_MAX_UINT64;
|
||||
}
|
||||
|
||||
static void extend_ds_error(struct nfs4_ff_layout_ds_err *err,
|
||||
u64 offset, u64 length)
|
||||
{
|
||||
u64 end;
|
||||
|
||||
end = max_t(u64, end_offset(err->offset, err->length),
|
||||
end_offset(offset, length));
|
||||
err->offset = min_t(u64, err->offset, offset);
|
||||
err->length = end - err->offset;
|
||||
}
|
||||
|
||||
static bool ds_error_can_merge(struct nfs4_ff_layout_ds_err *err, u64 offset,
|
||||
u64 length, int status, enum nfs_opnum4 opnum,
|
||||
nfs4_stateid *stateid,
|
||||
struct nfs4_deviceid *deviceid)
|
||||
{
|
||||
return err->status == status && err->opnum == opnum &&
|
||||
nfs4_stateid_match(&err->stateid, stateid) &&
|
||||
!memcmp(&err->deviceid, deviceid, sizeof(*deviceid)) &&
|
||||
end_offset(err->offset, err->length) >= offset &&
|
||||
err->offset <= end_offset(offset, length);
|
||||
}
|
||||
|
||||
static bool merge_ds_error(struct nfs4_ff_layout_ds_err *old,
|
||||
struct nfs4_ff_layout_ds_err *new)
|
||||
{
|
||||
if (!ds_error_can_merge(old, new->offset, new->length, new->status,
|
||||
new->opnum, &new->stateid, &new->deviceid))
|
||||
return false;
|
||||
|
||||
extend_ds_error(old, new->offset, new->length);
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool
|
||||
ff_layout_add_ds_error_locked(struct nfs4_flexfile_layout *flo,
|
||||
struct nfs4_ff_layout_ds_err *dserr)
|
||||
{
|
||||
struct nfs4_ff_layout_ds_err *err;
|
||||
|
||||
list_for_each_entry(err, &flo->error_list, list) {
|
||||
if (merge_ds_error(err, dserr)) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
list_add(&dserr->list, &flo->error_list);
|
||||
return false;
|
||||
}
|
||||
|
||||
static bool
|
||||
ff_layout_update_ds_error(struct nfs4_flexfile_layout *flo, u64 offset,
|
||||
u64 length, int status, enum nfs_opnum4 opnum,
|
||||
nfs4_stateid *stateid, struct nfs4_deviceid *deviceid)
|
||||
{
|
||||
bool found = false;
|
||||
struct nfs4_ff_layout_ds_err *err;
|
||||
|
||||
list_for_each_entry(err, &flo->error_list, list) {
|
||||
if (ds_error_can_merge(err, offset, length, status, opnum,
|
||||
stateid, deviceid)) {
|
||||
found = true;
|
||||
extend_ds_error(err, offset, length);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return found;
|
||||
}
|
||||
|
||||
int ff_layout_track_ds_error(struct nfs4_flexfile_layout *flo,
|
||||
struct nfs4_ff_layout_mirror *mirror, u64 offset,
|
||||
u64 length, int status, enum nfs_opnum4 opnum,
|
||||
gfp_t gfp_flags)
|
||||
{
|
||||
struct nfs4_ff_layout_ds_err *dserr;
|
||||
bool needfree;
|
||||
|
||||
if (status == 0)
|
||||
return 0;
|
||||
|
||||
if (mirror->mirror_ds == NULL)
|
||||
return -EINVAL;
|
||||
|
||||
spin_lock(&flo->generic_hdr.plh_inode->i_lock);
|
||||
if (ff_layout_update_ds_error(flo, offset, length, status, opnum,
|
||||
&mirror->stateid,
|
||||
&mirror->mirror_ds->id_node.deviceid)) {
|
||||
spin_unlock(&flo->generic_hdr.plh_inode->i_lock);
|
||||
return 0;
|
||||
}
|
||||
spin_unlock(&flo->generic_hdr.plh_inode->i_lock);
|
||||
dserr = kmalloc(sizeof(*dserr), gfp_flags);
|
||||
if (!dserr)
|
||||
return -ENOMEM;
|
||||
|
||||
INIT_LIST_HEAD(&dserr->list);
|
||||
dserr->offset = offset;
|
||||
dserr->length = length;
|
||||
dserr->status = status;
|
||||
dserr->opnum = opnum;
|
||||
nfs4_stateid_copy(&dserr->stateid, &mirror->stateid);
|
||||
memcpy(&dserr->deviceid, &mirror->mirror_ds->id_node.deviceid,
|
||||
NFS4_DEVICEID4_SIZE);
|
||||
|
||||
spin_lock(&flo->generic_hdr.plh_inode->i_lock);
|
||||
needfree = ff_layout_add_ds_error_locked(flo, dserr);
|
||||
spin_unlock(&flo->generic_hdr.plh_inode->i_lock);
|
||||
if (needfree)
|
||||
kfree(dserr);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* currently we only support AUTH_NONE and AUTH_SYS */
|
||||
static rpc_authflavor_t
|
||||
nfs4_ff_layout_choose_authflavor(struct nfs4_ff_layout_mirror *mirror)
|
||||
{
|
||||
if (mirror->uid == (u32)-1)
|
||||
return RPC_AUTH_NULL;
|
||||
return RPC_AUTH_UNIX;
|
||||
}
|
||||
|
||||
/* fetch cred for NFSv3 DS */
|
||||
static int ff_layout_update_mirror_cred(struct nfs4_ff_layout_mirror *mirror,
|
||||
struct nfs4_pnfs_ds *ds)
|
||||
{
|
||||
if (ds->ds_clp && !mirror->cred &&
|
||||
mirror->mirror_ds->ds_versions[0].version == 3) {
|
||||
struct rpc_auth *auth = ds->ds_clp->cl_rpcclient->cl_auth;
|
||||
struct rpc_cred *cred;
|
||||
struct auth_cred acred = {
|
||||
.uid = make_kuid(&init_user_ns, mirror->uid),
|
||||
.gid = make_kgid(&init_user_ns, mirror->gid),
|
||||
};
|
||||
|
||||
/* AUTH_NULL ignores acred */
|
||||
cred = auth->au_ops->lookup_cred(auth, &acred, 0);
|
||||
if (IS_ERR(cred)) {
|
||||
dprintk("%s: lookup_cred failed with %ld\n",
|
||||
__func__, PTR_ERR(cred));
|
||||
return PTR_ERR(cred);
|
||||
} else {
|
||||
mirror->cred = cred;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
struct nfs_fh *
|
||||
nfs4_ff_layout_select_ds_fh(struct pnfs_layout_segment *lseg, u32 mirror_idx)
|
||||
{
|
||||
struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, mirror_idx);
|
||||
struct nfs_fh *fh = NULL;
|
||||
struct nfs4_deviceid_node *devid;
|
||||
|
||||
if (mirror == NULL || mirror->mirror_ds == NULL ||
|
||||
mirror->mirror_ds->ds == NULL) {
|
||||
printk(KERN_ERR "NFS: %s: No data server for mirror offset index %d\n",
|
||||
__func__, mirror_idx);
|
||||
if (mirror && mirror->mirror_ds) {
|
||||
devid = &mirror->mirror_ds->id_node;
|
||||
pnfs_generic_mark_devid_invalid(devid);
|
||||
}
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* FIXME: For now assume there is only 1 version available for the DS */
|
||||
fh = &mirror->fh_versions[0];
|
||||
out:
|
||||
return fh;
|
||||
}
|
||||
|
||||
/* Upon return, either ds is connected, or ds is NULL */
|
||||
struct nfs4_pnfs_ds *
|
||||
nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx,
|
||||
bool fail_return)
|
||||
{
|
||||
struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, ds_idx);
|
||||
struct nfs4_pnfs_ds *ds = NULL;
|
||||
struct nfs4_deviceid_node *devid;
|
||||
struct inode *ino = lseg->pls_layout->plh_inode;
|
||||
struct nfs_server *s = NFS_SERVER(ino);
|
||||
unsigned int max_payload;
|
||||
rpc_authflavor_t flavor;
|
||||
|
||||
if (mirror == NULL || mirror->mirror_ds == NULL ||
|
||||
mirror->mirror_ds->ds == NULL) {
|
||||
printk(KERN_ERR "NFS: %s: No data server for offset index %d\n",
|
||||
__func__, ds_idx);
|
||||
if (mirror && mirror->mirror_ds) {
|
||||
devid = &mirror->mirror_ds->id_node;
|
||||
pnfs_generic_mark_devid_invalid(devid);
|
||||
}
|
||||
goto out;
|
||||
}
|
||||
|
||||
devid = &mirror->mirror_ds->id_node;
|
||||
if (ff_layout_test_devid_unavailable(devid))
|
||||
goto out;
|
||||
|
||||
ds = mirror->mirror_ds->ds;
|
||||
/* matching smp_wmb() in _nfs4_pnfs_v3/4_ds_connect */
|
||||
smp_rmb();
|
||||
if (ds->ds_clp)
|
||||
goto out;
|
||||
|
||||
flavor = nfs4_ff_layout_choose_authflavor(mirror);
|
||||
|
||||
/* FIXME: For now we assume the server sent only one version of NFS
|
||||
* to use for the DS.
|
||||
*/
|
||||
nfs4_pnfs_ds_connect(s, ds, devid, dataserver_timeo,
|
||||
dataserver_retrans,
|
||||
mirror->mirror_ds->ds_versions[0].version,
|
||||
mirror->mirror_ds->ds_versions[0].minor_version,
|
||||
flavor);
|
||||
|
||||
/* connect success, check rsize/wsize limit */
|
||||
if (ds->ds_clp) {
|
||||
max_payload =
|
||||
nfs_block_size(rpc_max_payload(ds->ds_clp->cl_rpcclient),
|
||||
NULL);
|
||||
if (mirror->mirror_ds->ds_versions[0].rsize > max_payload)
|
||||
mirror->mirror_ds->ds_versions[0].rsize = max_payload;
|
||||
if (mirror->mirror_ds->ds_versions[0].wsize > max_payload)
|
||||
mirror->mirror_ds->ds_versions[0].wsize = max_payload;
|
||||
} else {
|
||||
ff_layout_track_ds_error(FF_LAYOUT_FROM_HDR(lseg->pls_layout),
|
||||
mirror, lseg->pls_range.offset,
|
||||
lseg->pls_range.length, NFS4ERR_NXIO,
|
||||
OP_ILLEGAL, GFP_NOIO);
|
||||
if (fail_return) {
|
||||
pnfs_error_mark_layout_for_return(ino, lseg);
|
||||
if (ff_layout_has_available_ds(lseg))
|
||||
pnfs_set_retry_layoutget(lseg->pls_layout);
|
||||
else
|
||||
pnfs_clear_retry_layoutget(lseg->pls_layout);
|
||||
|
||||
} else {
|
||||
if (ff_layout_has_available_ds(lseg))
|
||||
set_bit(NFS_LAYOUT_RETURN_BEFORE_CLOSE,
|
||||
&lseg->pls_layout->plh_flags);
|
||||
else {
|
||||
pnfs_error_mark_layout_for_return(ino, lseg);
|
||||
pnfs_clear_retry_layoutget(lseg->pls_layout);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (ff_layout_update_mirror_cred(mirror, ds))
|
||||
ds = NULL;
|
||||
out:
|
||||
return ds;
|
||||
}
|
||||
|
||||
struct rpc_cred *
|
||||
ff_layout_get_ds_cred(struct pnfs_layout_segment *lseg, u32 ds_idx,
|
||||
struct rpc_cred *mdscred)
|
||||
{
|
||||
struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, ds_idx);
|
||||
struct rpc_cred *cred = ERR_PTR(-EINVAL);
|
||||
|
||||
if (!nfs4_ff_layout_prepare_ds(lseg, ds_idx, true))
|
||||
goto out;
|
||||
|
||||
if (mirror && mirror->cred)
|
||||
cred = mirror->cred;
|
||||
else
|
||||
cred = mdscred;
|
||||
out:
|
||||
return cred;
|
||||
}
|
||||
|
||||
/**
|
||||
* Find or create a DS rpc client with th MDS server rpc client auth flavor
|
||||
* in the nfs_client cl_ds_clients list.
|
||||
*/
|
||||
struct rpc_clnt *
|
||||
nfs4_ff_find_or_create_ds_client(struct pnfs_layout_segment *lseg, u32 ds_idx,
|
||||
struct nfs_client *ds_clp, struct inode *inode)
|
||||
{
|
||||
struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, ds_idx);
|
||||
|
||||
switch (mirror->mirror_ds->ds_versions[0].version) {
|
||||
case 3:
|
||||
/* For NFSv3 DS, flavor is set when creating DS connections */
|
||||
return ds_clp->cl_rpcclient;
|
||||
case 4:
|
||||
return nfs4_find_or_create_ds_client(ds_clp, inode);
|
||||
default:
|
||||
BUG();
|
||||
}
|
||||
}
|
||||
|
||||
static bool is_range_intersecting(u64 offset1, u64 length1,
|
||||
u64 offset2, u64 length2)
|
||||
{
|
||||
u64 end1 = end_offset(offset1, length1);
|
||||
u64 end2 = end_offset(offset2, length2);
|
||||
|
||||
return (end1 == NFS4_MAX_UINT64 || end1 > offset2) &&
|
||||
(end2 == NFS4_MAX_UINT64 || end2 > offset1);
|
||||
}
|
||||
|
||||
/* called with inode i_lock held */
|
||||
int ff_layout_encode_ds_ioerr(struct nfs4_flexfile_layout *flo,
|
||||
struct xdr_stream *xdr, int *count,
|
||||
const struct pnfs_layout_range *range)
|
||||
{
|
||||
struct nfs4_ff_layout_ds_err *err, *n;
|
||||
__be32 *p;
|
||||
|
||||
list_for_each_entry_safe(err, n, &flo->error_list, list) {
|
||||
if (!is_range_intersecting(err->offset, err->length,
|
||||
range->offset, range->length))
|
||||
continue;
|
||||
/* offset(8) + length(8) + stateid(NFS4_STATEID_SIZE)
|
||||
* + deviceid(NFS4_DEVICEID4_SIZE) + status(4) + opnum(4)
|
||||
*/
|
||||
p = xdr_reserve_space(xdr,
|
||||
24 + NFS4_STATEID_SIZE + NFS4_DEVICEID4_SIZE);
|
||||
if (unlikely(!p))
|
||||
return -ENOBUFS;
|
||||
p = xdr_encode_hyper(p, err->offset);
|
||||
p = xdr_encode_hyper(p, err->length);
|
||||
p = xdr_encode_opaque_fixed(p, &err->stateid,
|
||||
NFS4_STATEID_SIZE);
|
||||
p = xdr_encode_opaque_fixed(p, &err->deviceid,
|
||||
NFS4_DEVICEID4_SIZE);
|
||||
*p++ = cpu_to_be32(err->status);
|
||||
*p++ = cpu_to_be32(err->opnum);
|
||||
*count += 1;
|
||||
list_del(&err->list);
|
||||
kfree(err);
|
||||
dprintk("%s: offset %llu length %llu status %d op %d count %d\n",
|
||||
__func__, err->offset, err->length, err->status,
|
||||
err->opnum, *count);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
bool ff_layout_has_available_ds(struct pnfs_layout_segment *lseg)
|
||||
{
|
||||
struct nfs4_ff_layout_mirror *mirror;
|
||||
struct nfs4_deviceid_node *devid;
|
||||
int idx;
|
||||
|
||||
for (idx = 0; idx < FF_LAYOUT_MIRROR_COUNT(lseg); idx++) {
|
||||
mirror = FF_LAYOUT_COMP(lseg, idx);
|
||||
if (mirror && mirror->mirror_ds) {
|
||||
devid = &mirror->mirror_ds->id_node;
|
||||
if (!ff_layout_test_devid_unavailable(devid))
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
module_param(dataserver_retrans, uint, 0644);
|
||||
MODULE_PARM_DESC(dataserver_retrans, "The number of times the NFSv4.1 client "
|
||||
"retries a request before it attempts further "
|
||||
" recovery action.");
|
||||
module_param(dataserver_timeo, uint, 0644);
|
||||
MODULE_PARM_DESC(dataserver_timeo, "The time (in tenths of a second) the "
|
||||
"NFSv4.1 client waits for a response from a "
|
||||
" data server before it retries an NFS request.");
|
||||
|
|
@ -152,7 +152,7 @@ void nfs_fattr_map_and_free_names(struct nfs_server *server, struct nfs_fattr *f
|
|||
nfs_fattr_free_group_name(fattr);
|
||||
}
|
||||
|
||||
static int nfs_map_string_to_numeric(const char *name, size_t namelen, __u32 *res)
|
||||
int nfs_map_string_to_numeric(const char *name, size_t namelen, __u32 *res)
|
||||
{
|
||||
unsigned long val;
|
||||
char buf[16];
|
||||
|
|
@ -166,6 +166,7 @@ static int nfs_map_string_to_numeric(const char *name, size_t namelen, __u32 *re
|
|||
*res = val;
|
||||
return 1;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(nfs_map_string_to_numeric);
|
||||
|
||||
static int nfs_map_numeric_to_string(__u32 id, char *buf, size_t buflen)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -7796,9 +7796,7 @@ static void nfs4_layoutreturn_release(void *calldata)
|
|||
spin_lock(&lo->plh_inode->i_lock);
|
||||
if (lrp->res.lrs_present)
|
||||
pnfs_set_layout_stateid(lo, &lrp->res.stateid, true);
|
||||
clear_bit_unlock(NFS_LAYOUT_RETURN, &lo->plh_flags);
|
||||
smp_mb__after_atomic();
|
||||
wake_up_bit(&lo->plh_flags, NFS_LAYOUT_RETURN);
|
||||
pnfs_clear_layoutreturn_waitbit(lo);
|
||||
clear_bit(NFS_LAYOUT_RETURN_BEFORE_CLOSE, &lo->plh_flags);
|
||||
rpc_wake_up(&NFS_SERVER(lo->plh_inode)->roc_rpcwaitq);
|
||||
lo->plh_block_lgets--;
|
||||
|
|
|
|||
|
|
@ -910,7 +910,9 @@ send_layoutget(struct pnfs_layout_hdr *lo,
|
|||
pnfs_layout_io_set_failed(lo, range->iomode);
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
} else
|
||||
pnfs_layout_clear_fail_bit(lo,
|
||||
pnfs_iomode_to_fail_bit(range->iomode));
|
||||
|
||||
return lseg;
|
||||
}
|
||||
|
|
@ -930,6 +932,13 @@ static void pnfs_clear_layoutcommit(struct inode *inode,
|
|||
}
|
||||
}
|
||||
|
||||
void pnfs_clear_layoutreturn_waitbit(struct pnfs_layout_hdr *lo)
|
||||
{
|
||||
clear_bit_unlock(NFS_LAYOUT_RETURN, &lo->plh_flags);
|
||||
smp_mb__after_atomic();
|
||||
wake_up_bit(&lo->plh_flags, NFS_LAYOUT_RETURN);
|
||||
}
|
||||
|
||||
static int
|
||||
pnfs_send_layoutreturn(struct pnfs_layout_hdr *lo, nfs4_stateid stateid,
|
||||
enum pnfs_iomode iomode, bool sync)
|
||||
|
|
@ -943,6 +952,7 @@ pnfs_send_layoutreturn(struct pnfs_layout_hdr *lo, nfs4_stateid stateid,
|
|||
status = -ENOMEM;
|
||||
spin_lock(&ino->i_lock);
|
||||
lo->plh_block_lgets--;
|
||||
pnfs_clear_layoutreturn_waitbit(lo);
|
||||
rpc_wake_up(&NFS_SERVER(ino)->roc_rpcwaitq);
|
||||
spin_unlock(&ino->i_lock);
|
||||
pnfs_put_layout_hdr(lo);
|
||||
|
|
@ -1418,6 +1428,15 @@ static bool pnfs_prepare_to_retry_layoutget(struct pnfs_layout_hdr *lo)
|
|||
TASK_UNINTERRUPTIBLE);
|
||||
}
|
||||
|
||||
static void pnfs_clear_first_layoutget(struct pnfs_layout_hdr *lo)
|
||||
{
|
||||
unsigned long *bitlock = &lo->plh_flags;
|
||||
|
||||
clear_bit_unlock(NFS_LAYOUT_FIRST_LAYOUTGET, bitlock);
|
||||
smp_mb__after_atomic();
|
||||
wake_up_bit(bitlock, NFS_LAYOUT_FIRST_LAYOUTGET);
|
||||
}
|
||||
|
||||
/*
|
||||
* Layout segment is retreived from the server if not cached.
|
||||
* The appropriate layout segment is referenced and returned to the caller.
|
||||
|
|
@ -1499,6 +1518,8 @@ lookup_again:
|
|||
spin_unlock(&ino->i_lock);
|
||||
dprintk("%s wait for layoutreturn\n", __func__);
|
||||
if (pnfs_prepare_to_retry_layoutget(lo)) {
|
||||
if (first)
|
||||
pnfs_clear_first_layoutget(lo);
|
||||
pnfs_put_layout_hdr(lo);
|
||||
dprintk("%s retrying\n", __func__);
|
||||
goto lookup_again;
|
||||
|
|
@ -1533,13 +1554,8 @@ lookup_again:
|
|||
pnfs_clear_retry_layoutget(lo);
|
||||
atomic_dec(&lo->plh_outstanding);
|
||||
out_put_layout_hdr:
|
||||
if (first) {
|
||||
unsigned long *bitlock = &lo->plh_flags;
|
||||
|
||||
clear_bit_unlock(NFS_LAYOUT_FIRST_LAYOUTGET, bitlock);
|
||||
smp_mb__after_atomic();
|
||||
wake_up_bit(bitlock, NFS_LAYOUT_FIRST_LAYOUTGET);
|
||||
}
|
||||
if (first)
|
||||
pnfs_clear_first_layoutget(lo);
|
||||
pnfs_put_layout_hdr(lo);
|
||||
out:
|
||||
dprintk("%s: inode %s/%llu pNFS layout segment %s for "
|
||||
|
|
|
|||
|
|
@ -278,6 +278,7 @@ struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino,
|
|||
u64 count,
|
||||
enum pnfs_iomode iomode,
|
||||
gfp_t gfp_flags);
|
||||
void pnfs_clear_layoutreturn_waitbit(struct pnfs_layout_hdr *lo);
|
||||
|
||||
void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp);
|
||||
int pnfs_read_done_resend_to_mds(struct nfs_pgio_header *);
|
||||
|
|
|
|||
|
|
@ -516,6 +516,7 @@ enum pnfs_layouttype {
|
|||
LAYOUT_NFSV4_1_FILES = 1,
|
||||
LAYOUT_OSD2_OBJECTS = 2,
|
||||
LAYOUT_BLOCK_VOLUME = 3,
|
||||
LAYOUT_FLEX_FILES = 4,
|
||||
};
|
||||
|
||||
/* used for both layout return and recall */
|
||||
|
|
|
|||
|
|
@ -73,5 +73,7 @@ int nfs_map_group_to_gid(const struct nfs_server *, const char *, size_t, kgid_t
|
|||
int nfs_map_uid_to_name(const struct nfs_server *, kuid_t, char *, size_t);
|
||||
int nfs_map_gid_to_group(const struct nfs_server *, kgid_t, char *, size_t);
|
||||
|
||||
int nfs_map_string_to_numeric(const char *name, size_t namelen, __u32 *res);
|
||||
|
||||
extern unsigned int nfs_idmap_cache_timeout;
|
||||
#endif /* NFS_IDMAP_H */
|
||||
|
|
|
|||
|
|
@ -89,6 +89,8 @@ void rpc_free_iostats(struct rpc_iostats *);
|
|||
static inline struct rpc_iostats *rpc_alloc_iostats(struct rpc_clnt *clnt) { return NULL; }
|
||||
static inline void rpc_count_iostats(const struct rpc_task *task,
|
||||
struct rpc_iostats *stats) {}
|
||||
static inline void rpc_count_iostats_metrics(const struct rpc_task *,
|
||||
struct rpc_iostats *) {}
|
||||
static inline void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt) {}
|
||||
static inline void rpc_free_iostats(struct rpc_iostats *stats) {}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue