From: Heinz Mauelshagen heinzm@redhat.com
[ Upstream commit 74694bcbdf7e28a5ad548cdda9ac56d30be00d13 ]
Sending a check/repair message infrequently leads to -EBUSY instead of properly identifying an active resync. This occurs because raid_message() is testing recovery bits in a racy way.
Fix by calling decipher_sync_action() from raid_message() to properly identify the idle state of the RAID device.
Signed-off-by: Heinz Mauelshagen heinzm@redhat.com Signed-off-by: Mike Snitzer snitzer@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/dm-raid.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index b78a8a4d061ca..416998523d455 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -3690,8 +3690,7 @@ static int raid_message(struct dm_target *ti, unsigned int argc, char **argv, set_bit(MD_RECOVERY_INTR, &mddev->recovery); md_reap_sync_thread(mddev); } - } else if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) || - test_bit(MD_RECOVERY_NEEDED, &mddev->recovery)) + } else if (decipher_sync_action(mddev, mddev->recovery) != st_idle) return -EBUSY; else if (!strcasecmp(argv[0], "resync")) ; /* MD_RECOVERY_NEEDED set below */