commit: bf2cb0dab8c97f00a71875d9b13dbac17a2f47ca From: NeilBrown <[email protected]> Date: Fri, 14 Jan 2011 09:14:34 +1100 Subject: [PATCH] md: Fix removal of extra drives when converting RAID6 to RAID5
When a RAID6 is converted to a RAID5, the extra drive should be discarded. However it isn't due to a typo in a comparison. This bug was introduced in commit e93f68a1fc6 in 2.6.35-rc4 and is suitable for any -stable since than. As the extra drive is not removed, the 'degraded' counter is wrong and so the RAID5 will not respond correctly to a subsequent failure. Cc: [email protected] Signed-off-by: NeilBrown <[email protected]> --- drivers/md/md.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index 6658513..3194a80 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -3126,7 +3126,7 @@ level_store(mddev_t *mddev, const char *buf, size_t len) char nm[20]; if (rdev->raid_disk < 0) continue; - if (rdev->new_raid_disk > mddev->raid_disks) + if (rdev->new_raid_disk >= mddev->raid_disks) rdev->new_raid_disk = -1; if (rdev->new_raid_disk == rdev->raid_disk) continue; _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
