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| author | Heinz Mauelshagen <heinzm@redhat.com> | 2016-08-10 02:45:59 +0200 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2016-08-16 16:21:31 -0400 |
| commit | 31e10a41203dbc95e0c1e81ef49ad1773a50d4f9 (patch) | |
| tree | dff467bde67b6df74fdf8793dc4765c7cb6dfb5c /drivers/md/dm-raid.c | |
| parent | a4423287ec16e74c25de8ee3f261b1ea18c0af67 (diff) | |
| download | linux-31e10a41203dbc95e0c1e81ef49ad1773a50d4f9.tar.gz | |
dm raid: fix restoring of failed devices regression
'lvchange --refresh RaidLV' causes a mapped device suspend/resume cycle aiming at device restore and resync after transient device failures. This failed because flag RT_FLAG_RS_RESUMED was always cleared in the suspend path, thus the device restore wasn't performed in the resume path. Solve by removing RT_FLAG_RS_RESUMED from the suspend path and resume unconditionally. Also, remove superfluous comment from raid_resume(). Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-raid.c')
| -rw-r--r-- | drivers/md/dm-raid.c | 33 |
1 files changed, 11 insertions, 22 deletions
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index 07d17287fa4a..81ec772b1cc9 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -3382,11 +3382,10 @@ static void raid_postsuspend(struct dm_target *ti) { struct raid_set *rs = ti->private; - if (test_and_clear_bit(RT_FLAG_RS_RESUMED, &rs->runtime_flags)) { - if (!rs->md.suspended) - mddev_suspend(&rs->md); - rs->md.ro = 1; - } + if (!rs->md.suspended) + mddev_suspend(&rs->md); + + rs->md.ro = 1; } static void attempt_restore_of_faulty_devices(struct raid_set *rs) @@ -3606,25 +3605,15 @@ static void raid_resume(struct dm_target *ti) * devices are reachable again. */ attempt_restore_of_faulty_devices(rs); - } else { - mddev->ro = 0; - mddev->in_sync = 0; + } - /* - * When passing in flags to the ctr, we expect userspace - * to reset them because they made it to the superblocks - * and reload the mapping anyway. - * - * -> only unfreeze recovery in case of a table reload or - * we'll have a bogus recovery/reshape position - * retrieved from the superblock by the ctr because - * the ongoing recovery/reshape will change it after read. - */ - clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery); + mddev->ro = 0; + mddev->in_sync = 0; - if (mddev->suspended) - mddev_resume(mddev); - } + clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery); + + if (mddev->suspended) + mddev_resume(mddev); } static struct target_type raid_target = { |