From: Neil Brown <neilb@suse.de>
Date: Mon, 26 Mar 2007 21:40:42 +0000 (+0200)
Subject: MD: Fix problem where hot-added drives are not resynced.
X-Git-Tag: v2.6.16.46-rc1~27
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d03e0c61f63e3c12a5b33403c895285f4e345c35;p=thirdparty%2Fkernel%2Fstable.git

MD: Fix problem where hot-added drives are not resynced.

If a drive is added with HOT_ADD_DISK rather than ADD_NEW_DISK,
saved_raid_disk isn't initialised properly, and the drive can be
included in the array without a resync.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
---

diff --git a/drivers/md/md.c b/drivers/md/md.c
index adf27f2328382..9957f583cb251 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -3258,6 +3258,7 @@ static int hot_add_disk(mddev_t * mddev, dev_t dev)
 	}
 	clear_bit(In_sync, &rdev->flags);
 	rdev->desc_nr = -1;
+	rdev->saved_raid_disk = -1;
 	err = bind_rdev_to_array(rdev, mddev);
 	if (err)
 		goto abort_export;