Dan Williams
c337869d95
md: do not compute parity unless it is on a failed drive
...
If a block is computed (rather than read) then a check/repair operation
may be lead to believe that the data on disk is correct, when infact it
isn't. So only compute blocks for failed devices.
This issue has been around since at least 2.6.12, but has become harder to
hit in recent kernels since most reads bypass the cache.
echo repair > /sys/block/mdN/md/sync_action will set the parity blocks to the
correct state.
Cc: <stable@kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-06-06 11:29:08 -07:00
..
raid6test
.gitignore
bitmap.c
md: kill file_path wrapper
2008-05-24 09:56:09 -07:00
dm-bio-list.h
dm-bio-record.h
dm-crypt.c
dm crypt: fix ctx pending
2008-03-28 14:45:22 -07:00
dm-delay.c
dm-emc.c
block: no need to initialize rq->cmd with blk_get_request
2008-04-29 14:48:55 +02:00
dm-exception-store.c
dm: move include files
2008-04-25 13:26:55 +01:00
dm-hw-handler.c
dm-hw-handler.h
dm-io.c
dm: unplug queues in threads
2008-04-25 13:26:57 +01:00
dm-ioctl.c
dm-kcopyd.c
dm: unplug queues in threads
2008-04-25 13:26:57 +01:00
dm-linear.c
dm-log.c
dm: move include files
2008-04-25 13:26:55 +01:00
dm-mpath-hp-sw.c
block: no need to initialize rq->cmd with blk_get_request
2008-04-29 14:48:55 +02:00
dm-mpath-rdac.c
block: no need to initialize rq->cmd with blk_get_request
2008-04-29 14:48:55 +02:00
dm-mpath.c
dm-mpath.h
dm-path-selector.c
dm-path-selector.h
dm-raid1.c
dm: unplug queues in threads
2008-04-25 13:26:57 +01:00
dm-round-robin.c
dm-snap.c
dm: move include files
2008-04-25 13:26:55 +01:00
dm-snap.h
dm kcopyd: clean interface
2008-04-25 13:26:44 +01:00
dm-stripe.c
dm-table.c
dm: use unlocked variants of queue flag check/set
2008-04-29 10:21:12 -07:00
dm-target.c
dm-uevent.c
md: replace remaining __FUNCTION__ occurrences
2008-04-28 08:58:42 -07:00
dm-uevent.h
dm-zero.c
dm.c
dm: remove md argument from specific_minor
2008-04-25 13:27:02 +01:00
dm.h
dm: expose macros
2008-04-25 13:26:53 +01:00
faulty.c
Kconfig
linear.c
Remove blkdev warning triggered by using md
2008-05-14 19:11:15 -07:00
Makefile
dm: move include files
2008-04-25 13:26:55 +01:00
md.c
md: fix uninitialized use of mddev->recovery_wait
2008-06-06 11:29:08 -07:00
mktables.c
multipath.c
md: restart recovery cleanly after device failure.
2008-05-24 09:56:10 -07:00
raid0.c
Remove blkdev warning triggered by using md
2008-05-14 19:11:15 -07:00
raid1.c
md: restart recovery cleanly after device failure.
2008-05-24 09:56:10 -07:00
raid5.c
md: do not compute parity unless it is on a failed drive
2008-06-06 11:29:08 -07:00
raid6.h
raid6algos.c
drivers/md: use time_before, time_before_eq, etc
2008-04-28 08:58:42 -07:00
raid6altivec.uc
raid6int.uc
raid6mmx.c
raid6recov.c
raid6sse1.c
raid6sse2.c
raid6x86.h
raid10.c
md: restart recovery cleanly after device failure.
2008-05-24 09:56:10 -07:00
unroll.pl