Don't unconditionally set in_sync on newly added device in raid5_reshape

[mirror_ubuntu-bionic-kernel.git] / drivers / md / raid5.c

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index dcce204b6c733bb36887ab1981e25ac35ece189b..ab40529bdabedade29fb4eac0e36f6ce1bc93246 100644 (file)
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5361,9 +5361,11 @@ static int raid5_start_reshape(mddev_t *mddev)
                    !test_bit(Faulty, &rdev->flags)) {
                        if (raid5_add_disk(mddev, rdev) == 0) {
                                char nm[20];
-                               set_bit(In_sync, &rdev->flags);
+                               if (rdev->raid_disk >= conf->previous_raid_disks)
+                                       set_bit(In_sync, &rdev->flags);
+                               else
+                                       rdev->recovery_offset = 0;
                                added_devices++;
-                               rdev->recovery_offset = 0;
                                sprintf(nm, "rd%d", rdev->raid_disk);
                                if (sysfs_create_link(&mddev->kobj,
                                                      &rdev->kobj, nm))