OpenE2K/qemu-e2k
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5279efebcf
qemu-e2k/block
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Jeff Cody 5279efebcf block: mirror - fix full sync mode when target does not support zero init 
During mirror, if the target device does not support zero init, a
mirror may result in a corrupted image for sync="full" mode.

This is due to how the initial dirty bitmap is set up prior to copying
data - we did not mark sectors as dirty that are unallocated.  This
means those unallocated sectors are skipped over on the target, and for
a device without zero init, invalid data may reside in those holes.

If both of the following conditions are true, then we will explicitly
mark all sectors as dirty:

    1.) sync = "full"
    2.) bdrv_has_zero_init(target) == false

If the target does support zero init, but a target image is passed in
with data already present (i.e. an "existing" image), it is assumed the
data present in the existing image is valid data for those sectors.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 91ed4bc5bda7e2b09eb508b07c83f4071fe0b3c9.1443705220.git.jcody@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
2015-10-01 15:02:21 -04:00
..
accounting.c block: add accounting for merged requests 2015-02-06 17:24:21 +01:00
archipelago.c block: remove superfluous '\n' around error_report/error_setg 2015-03-10 08:15:33 +03:00
backup.c Backup: don't do copy-on-read in before_write_notifier 2015-09-25 08:37:07 -04:00
blkdebug.c block: Move flag inheritance to bdrv_open_inherit() 2015-06-12 17:04:59 +02:00
blkverify.c block: Move flag inheritance to bdrv_open_inherit() 2015-06-12 17:04:59 +02:00
block-backend.c block: Drop drv parameter from bdrv_open() 2015-09-14 16:51:36 +02:00
bochs.c
cloop.c
commit.c block: Allow specifying driver-specific options to reopen 2015-09-14 16:51:36 +02:00
curl.c block/curl: Don't lose original error when a connection fails. 2015-07-14 21:50:13 -04:00
dmg.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
gluster.c
io.c block: Introduce a new API bdrv_co_no_copy_on_readv() 2015-09-25 08:37:07 -04:00
iscsi.c block/iscsi: validate block size returned from target 2015-09-07 18:14:03 +02:00
linux-aio.c
Makefile.objs block: convert quorum blockdrv to use crypto APIs 2015-07-08 13:11:01 +02:00
mirror.c block: mirror - fix full sync mode when target does not support zero init 2015-10-01 15:02:21 -04:00
nbd-client.c nbd: Set block size to BDRV_SECTOR_SIZE 2015-03-18 12:07:01 +01:00
nbd-client.h nbd: Set block size to BDRV_SECTOR_SIZE 2015-03-18 12:07:01 +01:00
nbd.c nbd: convert to use the QAPI SocketAddress object 2015-09-25 12:04:40 +02:00
nfs.c block/nfs: cache allocated filesize for read-only files 2015-09-25 08:37:07 -04:00
null.c block/null: Support reopen 2015-04-28 15:36:09 +02:00
parallels.c block: Drop drv parameter from bdrv_open() 2015-09-14 16:51:36 +02:00
qapi.c qerror: Finally unused, clean up 2015-06-22 18:20:40 +02:00
qcow2-cache.c qcow2: Rename BDRVQcowState to BDRVQcow2State 2015-09-14 16:51:36 +02:00
qcow2-cluster.c qcow2: Make size_to_clusters() return uint64_t 2015-09-14 16:51:37 +02:00
qcow2-refcount.c qcow2: Make qcow2_alloc_bytes() more explicit 2015-09-14 16:51:37 +02:00
qcow2-snapshot.c qcow2: Rename BDRVQcowState to BDRVQcow2State 2015-09-14 16:51:36 +02:00
qcow2.c qcow2: Support updating driver-specific options in reopen 2015-09-14 16:51:37 +02:00
qcow2.h qcow2: Make size_to_clusters() return uint64_t 2015-09-14 16:51:37 +02:00
qcow.c block: Drop drv parameter from bdrv_open() 2015-09-14 16:51:36 +02:00
qed-check.c
qed-cluster.c
qed-gencb.c
qed-l2-cache.c
qed-table.c
qed.c block: Drop drv parameter from bdrv_open() 2015-09-14 16:51:36 +02:00
qed.h qed: Really remove unused field QEDAIOCB.finished 2015-02-06 17:24:21 +01:00
quorum.c quorum: validate vote threshold against num_children even if read-pattern is fifo 2015-09-04 21:00:32 +02:00
raw_bsd.c block: Add driver methods to probe blocksizes and geometry 2015-03-10 14:02:22 +01:00
raw-aio.h
raw-posix.c block/raw-posix: Use raw_normalize_devicepath() 2015-09-04 20:59:48 +02:00
raw-win32.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
rbd.c rbd: fix ceph settings precedence 2015-07-14 17:15:23 +02:00
sheepdog.c sheepdog: refine discard support 2015-09-25 10:25:19 -04:00
snapshot.c block: Use bdrv_drain to replace uncessary bdrv_drain_all 2015-07-07 14:27:14 +01:00
ssh.c block/ssh: Avoid segfault if inet_connect doesn't set errno. 2015-07-28 00:19:05 -04:00
stream.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
throttle-groups.c throttle: Check current timers before updating any_timer_armed[] 2015-06-23 15:06:16 +01:00
vdi.c block: Drop drv parameter from bdrv_open() 2015-09-14 16:51:36 +02:00
vhdx-endian.c
vhdx-log.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
vhdx.c block: Drop drv parameter from bdrv_open() 2015-09-14 16:51:36 +02:00
vhdx.h
vmdk.c vmdk: Fix next_cluster_sector for compressed write 2015-09-14 16:51:37 +02:00
vpc.c block: Drop drv parameter from bdrv_open() 2015-09-14 16:51:36 +02:00
vvfat.c block: Drop drv parameter from bdrv_open() 2015-09-14 16:51:36 +02:00
win32-aio.c
write-threshold.c block: Fix block-set-write-threshold not to use funky error class 2015-03-16 17:07:25 +01:00