| commit | 4706b349f4a8312d31b3d0cf61fe721699356920 | |
| author | NeilBrown <neilb@suse.de> | |
| Fri, 6 Feb 2009 04:06:47 +0000 (6 15:06 +1100) | ||
| committer | NeilBrown <neilb@suse.de> | |
| Fri, 6 Feb 2009 04:06:47 +0000 (6 15:06 +1100) | ||
| tree | 86c0ee896722e45e324a97b704c0419fbb968d4a | treesnapshot (tar.gz zip) |
| parent | eda58a85ec3fc05855a26654d97a2b53f0e715b9 | commitdiff |
md: Allow read error in a single drive raid1 to be passed up.
If a raid1 only has a single working device and gets a read error,
we choose to simply return that error up to the filesystem (or whatever)
rather than failing the whole array.
However the codes doesn't quite do that. We attempt a readbalance
which allocates the same drive, so we retry the read - indefinitely.
Instead: If read_balance in the error case chooses the same drive that just
failed, treat it as a failure and don't retry.
Signed-off-by: NeilBrown <neilb@suse.de>
If a raid1 only has a single working device and gets a read error,
we choose to simply return that error up to the filesystem (or whatever)
rather than failing the whole array.
However the codes doesn't quite do that. We attempt a readbalance
which allocates the same drive, so we retry the read - indefinitely.
Instead: If read_balance in the error case chooses the same drive that just
failed, treat it as a failure and don't retry.
Signed-off-by: NeilBrown <neilb@suse.de>
| drivers/md/raid1.c | diffblobblamehistory |