1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index 89a06a361332..45d94a7e7f6d 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -1017,6 +1017,19 @@ static int analyse_superblocks(struct dm_target *ti, struct raid_set *rs)
 
         freshest = NULL;
         rdev_for_each_safe(rdev, tmp, mddev) {
+                /*
+                 * Skipping super_load due to DMPF_SYNC will cause
+                 * the array to undergo initialization again as
+                 * though it were new.  This is the intended effect
+                 * of the "sync" directive.
+                 *
+                 * When reshaping capability is added, we must ensure
+                 * that the "sync" directive is disallowed during the
+                 * reshape.
+                 */
+                if (rs->print_flags & DMPF_SYNC)
+                        continue;
+
                 if (!rdev->meta_bdev)
                         continue;