md/raid10: Fix bug when activating a hot-spare.
This is a fairly serious bug in RAID10.
When a RAID10 array is degraded and a hot-spare is activated, the
spare does not take up the empty slot, but rather replaces the first
working device.
This is likely to make the array non-functional. It would normally
be possible to recover the data, but that would need care and is not
guaranteed.
This bug was introduced in commit
2bb77736ae
which first appeared in 3.1.
Cc: stable@kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
parent
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commit
7fcc7c8acf
1 changed files with 1 additions and 1 deletions
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@ -1355,7 +1355,7 @@ static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev)
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struct mirror_info *p = &conf->mirrors[mirror];
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if (p->recovery_disabled == mddev->recovery_disabled)
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continue;
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if (!p->rdev)
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if (p->rdev)
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continue;
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disk_stack_limits(mddev->gendisk, rdev->bdev,
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