[patch 56/67] MD: Fix problem where hot-added drives are not resynced.

Greg KH
2006-10-11T21:16:44Z

[-- Attachment #1: md-fix-problem-where-hot-added-drives-are-not-resynced.patch --]
[-- Type: text/plain, Size: 824 bytes --]

-stable review patch. If anyone has any objections, please let us know.

------------------
From: Neil Brown <neilb@suse.de>

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.

From: Neil Brown <neilb@suse.de>
Cc: <syrius.ml@no-log.org>
Cc: Richard Bollinger <rabollinger@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/md/md.c | 1 +
1 file changed, 1 insertion(+)

--- linux-2.6.18.orig/drivers/md/md.c
+++ linux-2.6.18/drivers/md/md.c
@@ -3867,6 +3867,7 @@ static int hot_add_disk(mddev_t * mddev,
}
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;

--