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authorNeilBrown <neilb@suse.de>2011-01-12 09:03:35 +1100
committerPaul Gortmaker <paul.gortmaker@windriver.com>2011-04-17 16:16:15 -0400
commita330b207090a5698c308937291a728e3e884d3ea (patch)
treefdf44a3e5b4779d30d8cc712a4b2c9efadc72016 /drivers
parentebc34eb7134b13d6a886f185e6ffd4535e7da220 (diff)
md: fix regression with re-adding devices to arrays with no metadata
commit bf572541ab44240163eaa2d486b06f306a31d45a upstream. Commit 1a855a0606 (2.6.37-rc4) fixed a problem where devices were re-added when they shouldn't be but caused a regression in a less common case that means sometimes devices cannot be re-added when they should be. In particular, when re-adding a device to an array without metadata we should always access the device, but after the above commit we didn't. This patch sets the In_sync flag in that case so that the re-add succeeds. This patch is suitable for any -stable kernel to which 1a855a0606 was applied. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/md/md.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index e56e35e5bc79..7db9ceb276f2 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5008,9 +5008,10 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info)
/* set saved_raid_disk if appropriate */
if (!mddev->persistent) {
if (info->state & (1<<MD_DISK_SYNC) &&
- info->raid_disk < mddev->raid_disks)
+ info->raid_disk < mddev->raid_disks) {
rdev->raid_disk = info->raid_disk;
- else
+ set_bit(In_sync, &rdev->flags);
+ } else
rdev->raid_disk = -1;
} else
super_types[mddev->major_version].