diff options
| author | NeilBrown <neilb@suse.de> | 2012-03-19 05:46:37 +0400 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2012-03-19 05:46:37 +0400 |
| commit | dc10c643e8a8d008fd16dd6706e9e0018eadf8d2 (patch) | |
| tree | 6a0efe323cfaca9d180c0429c74697598c6d9a05 | |
| parent | 41fe75f60bcd4d698daed3e54bb099227358ce58 (diff) | |
| download | linux-dc10c643e8a8d008fd16dd6706e9e0018eadf8d2.tar.xz | |
md: allow re-add to failed arrays.
When an array is failed (some data inaccessible) then there is no
point attempting to add a spare as it could not possibly be recovered.
However that may be value in re-adding a recently removed device.
e.g. if there is a write-intent-bitmap and it is clear, then access
to the data could be restored by this action.
So don't reject a re-add to a failed array for RAID10 and RAID5 (the
only arrays types that check for a failed array).
Signed-off-by: NeilBrown <neilb@suse.de>
| -rw-r--r-- | drivers/md/raid10.c | 2 | ||||
| -rw-r--r-- | drivers/md/raid5.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 1a19c962f860..f4f3edcdaf8d 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1483,7 +1483,7 @@ static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev) * very different from resync */ return -EBUSY; - if (!enough(conf, -1)) + if (rdev->saved_raid_disk < 0 && !enough(conf, -1)) return -EINVAL; if (rdev->raid_disk >= 0) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 99b2bbf8b5d8..d38d235cc39d 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -5361,7 +5361,7 @@ static int raid5_add_disk(struct mddev *mddev, struct md_rdev *rdev) if (mddev->recovery_disabled == conf->recovery_disabled) return -EBUSY; - if (has_failed(conf)) + if (rdev->saved_raid_disk < 0 && has_failed(conf)) /* no point adding a device */ return -EINVAL; |