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>
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@ -685,6 +685,12 @@ static void *raid0_takeover(struct mddev *mddev)
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* raid10 - assuming we have all necessary active disks
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* raid1 - with (N -1) mirror drives faulty
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*/
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if (mddev->bitmap) {
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printk(KERN_ERR "md/raid0: %s: cannot takeover array with bitmap\n",
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mdname(mddev));
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return ERR_PTR(-EBUSY);
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}
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if (mddev->level == 4)
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return raid0_takeover_raid45(mddev);
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