md/raid0: check for bitmap compatability when changing raid levels.



If an array has a bitmap, then it cannot be converted to raid0.

Reported-by: Xiao Ni <xni@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>

parent ac7e50a3

drivers/md/raid0.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -685,6 +685,12 @@ static void raid0_takeover(struct mddev mddev)
		* raid10 - assuming we have all necessary active disks
		* raid1 - with (N -1) mirror drives faulty
		*/

		if (mddev->bitmap) {
		printk(KERN_ERR "md/raid0: %s: cannot takeover array with bitmap\n",
		mdname(mddev));
		return ERR_PTR(-EBUSY);
		}
		if (mddev->level == 4)
		return raid0_takeover_raid45(mddev);