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

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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>
This commit is contained in:
NeilBrown 2014-08-06 16:34:27 +10:00
parent ac7e50a383
commit a8461a61c2
1 changed files with 6 additions and 0 deletions
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6
drivers/md/raid0.c
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@ -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);