Commit 09cd9270 authored Dec 23, 2011 by NeilBrown

md/linear: fix hot-add of devices to linear arrays.



commit d70ed2e4
broke hot-add to a linear array.
After that commit, metadata if not written to devices until they
have been fully integrated into the array as determined by
saved_raid_disk.  That patch arranged to clear that field after
a recovery completed.

However for linear arrays, there is no recovery - the integration is
instantaneous.  So we need to explicitly clear the saved_raid_disk
field.

Signed-off-by: NeilBrown <neilb@suse.de>

parent 5d8c71f9

drivers/md/linear.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -230,6 +230,7 @@ static int linear_add(struct mddev mddev, struct md_rdev rdev)
		return -EINVAL;

		rdev->raid_disk = rdev->saved_raid_disk;
		rdev->saved_raid_disk = -1;

		newconf = linear_conf(mddev,mddev->raid_disks+1);