From: Guoqing Jiang jgq516@gmail.com
[ Upstream commit 0d8ed0e9bf9643f27f4816dca61081784dedb38d ]
When add one disk to array, the md_reap_sync_thread is responsible to activate the spare and set In_sync flag for the new member in spare_active().
But if raid1 has one member disk A, and disk B is added to the array. Then we offline A before all the datas are synchronized from A to B, obviously B doesn't have the latest data as A, but B is still marked with In_sync flag.
So let's not call spare_active under the condition, otherwise B is still showed with 'U' state which is not correct.
Signed-off-by: Guoqing Jiang guoqing.jiang@cloud.ionos.com Signed-off-by: Song Liu songliubraving@fb.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/md.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/md/md.c b/drivers/md/md.c index 764ed9c466294..d185725e100c0 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -8906,7 +8906,8 @@ void md_reap_sync_thread(struct mddev *mddev) /* resync has finished, collect result */ md_unregister_thread(&mddev->sync_thread); if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery) && - !test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery)) { + !test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery) && + mddev->degraded != mddev->raid_disks) { /* success...*/ /* activate any spares */ if (mddev->pers->spare_active(mddev)) {