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authorNeilBrown2014-08-06 16:34:27 +1000
committerNeilBrown2014-08-08 15:33:17 +1000
commita8461a61c241a25afedbe493c13d98a6e0cf4246 (patch)
tree129cf82707c536924406d7029fd66ae431eb577e /drivers/md
parentac7e50a3835de2321bcc511e4b6fe736c73c830f (diff)
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>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/raid0.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 407a99e46f69..cf91f5910c7c 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -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);