diff options
| author | Shaohua Li <shli@fb.com> | 2018-10-14 17:05:07 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-11-13 11:09:00 -0800 |
| commit | 589c375032fc7e0d90ba554f2f16414401034eb3 (patch) | |
| tree | a67a18b7e9d389b85fb42676968b47222585b6b1 | |
| parent | fcd90d7dea56f968cc540ba5b500700449799be8 (diff) | |
| download | linux-stable-589c375032fc7e0d90ba554f2f16414401034eb3.tar.gz linux-stable-589c375032fc7e0d90ba554f2f16414401034eb3.tar.bz2 linux-stable-589c375032fc7e0d90ba554f2f16414401034eb3.zip | |
MD: fix invalid stored role for a disk - try2
commit 9e753ba9b9b405e3902d9f08aec5f2ea58a0c317 upstream.
Commit d595567dc4f0 (MD: fix invalid stored role for a disk) broke linear
hotadd. Let's only fix the role for disks in raid1/10.
Based on Guoqing's original patch.
Reported-by: kernel test robot <rong.a.chen@intel.com>
Cc: Gioh Kim <gi-oh.kim@profitbricks.com>
Cc: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/md/md.c | 4 | ||||
| -rw-r--r-- | drivers/md/raid1.c | 1 | ||||
| -rw-r--r-- | drivers/md/raid10.c | 1 |
3 files changed, 2 insertions, 4 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 85459c17cc60..8668793262d0 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1776,10 +1776,6 @@ static int super_1_validate(struct mddev *mddev, struct md_rdev *rdev) } else set_bit(In_sync, &rdev->flags); rdev->raid_disk = role; - if (role >= mddev->raid_disks) { - rdev->saved_raid_disk = -1; - rdev->raid_disk = -1; - } break; } if (sb->devflags & WriteMostly1) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 4e990246225e..1d54109071cc 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1734,6 +1734,7 @@ static int raid1_add_disk(struct mddev *mddev, struct md_rdev *rdev) */ if (rdev->saved_raid_disk >= 0 && rdev->saved_raid_disk >= first && + rdev->saved_raid_disk < conf->raid_disks && conf->mirrors[rdev->saved_raid_disk].rdev == NULL) first = last = rdev->saved_raid_disk; diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index d6f7978b4449..811427e53126 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1808,6 +1808,7 @@ static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev) first = last = rdev->raid_disk; if (rdev->saved_raid_disk >= first && + rdev->saved_raid_disk < conf->geo.raid_disks && conf->mirrors[rdev->saved_raid_disk].rdev == NULL) mirror = rdev->saved_raid_disk; else |