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d85fa9eb87
qemu/block
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Jeff Cody d85fa9eb87 block/gluster: prevent data loss after i/o error 
Upon receiving an I/O error after an fsync, by default gluster will
dump its cache.  However, QEMU will retry the fsync, which is especially
useful when encountering errors such as ENOSPC when using the werror=stop
option.  When using caching with gluster, however, the last written data
will be lost upon encountering ENOSPC.  Using the write-behind-cache
xlator option of 'resync-failed-syncs-after-fsync' should cause gluster
to retain the cached data after a failed fsync, so that ENOSPC and other
transient errors are recoverable.

Unfortunately, we have no way of knowing if the
'resync-failed-syncs-after-fsync' xlator option is supported, so for now
close the fd and set the BDS driver to NULL upon fsync error.

Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-04-19 12:24:59 -04:00
..
accounting.c block: Clean up includes 2016-01-20 13:36:23 +01:00
archipelago.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
backup.c block: Remove bdrv_(set_)enable_write_cache() 2016-03-30 12:16:03 +02:00
blkdebug.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
blkreplay.c replay: introduce block devices record/replay 2016-03-30 12:15:57 +02:00
blkverify.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
block-backend.c block: Don't ignore flags in blk_{,co,aio}_write_zeroes() 2016-04-15 17:22:12 +02:00
bochs.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
cloop.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
commit.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
crypto.c crypto: Avoid memory leak on failure 2016-04-05 17:23:21 +02:00
curl.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
dirty-bitmap.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
dmg.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
gluster.c block/gluster: prevent data loss after i/o error 2016-04-19 12:24:59 -04:00
io.c block: Fix bdrv_drain in coroutine 2016-04-11 16:59:09 +01:00
iscsi.c iscsi: Support BDRV_REQ_FUA 2016-03-30 12:16:02 +02:00
linux-aio.c block: Clean up includes 2016-01-20 13:36:23 +01:00
Makefile.objs replay: introduce block devices record/replay 2016-03-30 12:15:57 +02:00
mirror.c mirror: Replace bdrv_drain(bs) with bdrv_co_drain(bs) 2016-04-11 16:59:09 +01:00
nbd-client.c nbd: don't request FUA on FLUSH 2016-04-05 11:46:52 +02:00
nbd-client.h nbd: Support BDRV_REQ_FUA 2016-03-30 12:16:02 +02:00
nbd.c nbd: Support BDRV_REQ_FUA 2016-03-30 12:16:02 +02:00
nfs.c block/nfs: add missing #include "qemu/cutils.h" 2016-03-30 16:50:39 -04:00
null.c block/null-{co,aio}: Implement get_block_status() 2016-03-30 12:16:04 +02:00
parallels.c block: Always set writeback mode in blk_new_open() 2016-03-30 12:16:01 +02:00
qapi.c block/qapi: Use blk_enable_write_cache() 2016-03-30 12:16:02 +02:00
qcow2-cache.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qcow2-cluster.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
qcow2-refcount.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
qcow2-snapshot.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
qcow2.c qcow2: Prevent backing file names longer than 1023 2016-04-12 18:06:51 +02:00
qcow2.h qcow2: Add function for refcount order amendment 2015-12-18 14:34:43 +01:00
qcow.c block: Always set writeback mode in blk_new_open() 2016-03-30 12:16:01 +02:00
qed-check.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qed-cluster.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qed-gencb.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qed-l2-cache.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qed-table.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qed.c block: Always set writeback mode in blk_new_open() 2016-03-30 12:16:01 +02:00
qed.h util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
quorum.c quorum: Emit QUORUM_REPORT_BAD for reads in fifo mode 2016-03-17 16:43:30 +01:00
raw_bsd.c raw: Support BDRV_REQ_FUA 2016-03-30 12:16:02 +02:00
raw-aio.h include/qemu/iov.h: Don't include qemu-common.h 2016-03-22 22:20:16 +01:00
raw-posix.c block/raw-posix.c: Make physical devices usable in QEMU under Mac OS X host 2016-03-30 11:59:32 +02:00
raw-win32.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
rbd.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
sheepdog.c block: Always set writeback mode in blk_new_open() 2016-03-30 12:16:01 +02:00
snapshot.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
ssh.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
stream.c -----BEGIN PGP SIGNATURE----- 2016-03-29 19:54:49 +01:00
throttle-groups.c block: Clean up includes 2016-01-20 13:36:23 +01:00
vdi.c block: Always set writeback mode in blk_new_open() 2016-03-30 12:16:01 +02:00
vhdx-endian.c block: Clean up includes 2016-01-20 13:36:23 +01:00
vhdx-log.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
vhdx.c block: Always set writeback mode in blk_new_open() 2016-03-30 12:16:01 +02:00
vhdx.h block: vhdx - update PAYLOAD_BLOCK_UNMAPPED value to match 1.00 spec 2014-12-12 15:42:22 +00:00
vmdk.c block: Always set writeback mode in blk_new_open() 2016-03-30 12:16:01 +02:00
vpc.c block/vpc: update comments to be compliant w/coding guidelines 2016-04-15 17:22:12 +02:00
vvfat.c block: Remove BDRV_O_CACHE_WB 2016-03-30 12:16:03 +02:00
win32-aio.c block: Clean up includes 2016-01-20 13:36:23 +01:00
write-threshold.c block: Clean up includes 2016-01-20 13:36:23 +01:00