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| author | Mark McLoughlin <markmc@redhat.com> | 2009-10-24 14:14:31 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-10-24 14:14:31 +0200 |
| commit | 6cafb12dc85a5bdc722791cc5070968413264909 (patch) | |
| tree | a7891dfc10d23a6757034a2beeb422ba11088662 /fs/block_dev.c | |
| parent | d995053d045d777e78ba7eba71a6a0733f3aa726 (diff) | |
| download | op-kernel-dev-6cafb12dc85a5bdc722791cc5070968413264909.zip op-kernel-dev-6cafb12dc85a5bdc722791cc5070968413264909.tar.gz | |
block: silently error unsupported empty barriers too
With 2.6.32-rc5 in a KVM guest using dm and virtio_blk, we see the
following errors:
end_request: I/O error, dev vda, sector 0
end_request: I/O error, dev vda, sector 0
The errors go away if dm stops submitting empty barriers, by reverting:
commit 52b1fd5a27c625c78373e024bf570af3c9d44a79
Author: Mikulas Patocka <mpatocka@redhat.com>
dm: send empty barriers to targets in dm_flush
We should silently error all barriers, even empty barriers, on devices
like virtio_blk which don't support them.
See also:
https://bugzilla.redhat.com/514901
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Alasdair G Kergon <agk@redhat.com>
Acked-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Neil Brown <neilb@suse.de>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'fs/block_dev.c')
0 files changed, 0 insertions, 0 deletions
