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authorGoldwyn Rodrigues <rgoldwyn@suse.com>2015-12-18 15:19:16 +1100
committerNeilBrown <neilb@suse.com>2015-12-18 15:19:16 +1100
commitcb01c5496d2d9c0c862443561df16ff122db348f (patch)
tree964f7df60be4119d7b848eed64074403ac6bdd6f /drivers/md
parent0dc10e50f219db3f7fd66d35e5d95860ecde4213 (diff)
downloadlinux-cb01c5496d2d9c0c862443561df16ff122db348f.tar.bz2
Fix remove_and_add_spares removes drive added as spare in slot_store
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() Fixes: 2910ff17d154 ("md: remove_and_add_spares() to activate specific rdev") Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com> Signed-off-by: Pawel Baldysiak <pawel.baldysiak@intel.com> Signed-off-by: NeilBrown <neilb@suse.com>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/md.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index b79b95784e46..dbedc58d8c00 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2774,6 +2774,7 @@ 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;
@@ -2795,9 +2796,15 @@ 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 &&