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-rw-r--r--drivers/md/md.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index b6d16022a53..8dbab2ef388 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1597,6 +1597,19 @@ void md_update_sb(mddev_t * mddev)
1597 1597
1598repeat: 1598repeat:
1599 spin_lock_irq(&mddev->write_lock); 1599 spin_lock_irq(&mddev->write_lock);
1600
1601 if (mddev->degraded && mddev->sb_dirty == 3)
1602 /* If the array is degraded, then skipping spares is both
1603 * dangerous and fairly pointless.
1604 * Dangerous because a device that was removed from the array
1605 * might have a event_count that still looks up-to-date,
1606 * so it can be re-added without a resync.
1607 * Pointless because if there are any spares to skip,
1608 * then a recovery will happen and soon that array won't
1609 * be degraded any more and the spare can go back to sleep then.
1610 */
1611 mddev->sb_dirty = 1;
1612
1600 sync_req = mddev->in_sync; 1613 sync_req = mddev->in_sync;
1601 mddev->utime = get_seconds(); 1614 mddev->utime = get_seconds();
1602 if (mddev->sb_dirty == 3) 1615 if (mddev->sb_dirty == 3)