From: Goldwyn Rodrigues <rgoldwyn@xxxxxxxx>
Commit 2910ff17d154baa5eb50e362a91104e831eb2bb6
introduced a regression which would remove a recently added spare via
slot_store. Revert part of the patch which touches slot_store() and add
the disk directly using pers->hot_add_disk()
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@xxxxxxxx>
Signed-off-by: Pawel Baldysiak <pawel.baldysiak@xxxxxxxxx>
---
drivers/md/md.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index a71b36f..0444afa 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2726,6 +2726,7 @@ slot_store(struct md_rdev *rdev, const char *buf, size_t len)
/* Activating a spare .. or possibly reactivating
* if we ever get bitmaps working here.
*/
+ int err;
if (rdev->raid_disk != -1)
return -EBUSY;
@@ -2747,9 +2748,15 @@ slot_store(struct md_rdev *rdev, const char *buf, size_t len)
rdev->saved_raid_disk = -1;
clear_bit(In_sync, &rdev->flags);
clear_bit(Bitmap_sync, &rdev->flags);
- remove_and_add_spares(rdev->mddev, rdev);
- if (rdev->raid_disk == -1)
- return -EBUSY;
+ err = rdev->mddev->pers->
+ hot_add_disk(rdev->mddev, rdev);
+ if (err) {
+ rdev->raid_disk = -1;
+ return err;
+ } else
+ sysfs_notify_dirent_safe(rdev->sysfs_state);
+ if (sysfs_link_rdev(rdev->mddev, rdev))
+ /* failure here is OK */;
/* don't wakeup anyone, leave that to userspace. */
} else {
if (slot >= rdev->mddev->raid_disks &&
--
2.6.2
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