michael@xxxxxxxxxxx wrote: > UUID=8e651838-38c1-4783-8bde-4174ec484d52 / ext3 defaults 1 1 > UUID=aaeca70c-f0fe-470c-b631-87248648d275 /export xfs defaults,nobarrier > 1 2 > UUID=6e22c5b0-2874-4826-a871-ed733f8da643 swap swap defaults 0 0 > UUID=323cd094-4cbe-4c3b-9096-366c05465e7c /export/services xfs defaults 1 2 > > so it is referring to the UUID of the filesystem and not necessarily the > device. Some are single partitions, some md devices, and some sit on > top of LVM. What does : mdadm --detail /dev/md0 | grep UUID show? I think it will give you the UUID of the md device, not the fs on the md device (which as you have seen is also the UUID of the fs visible on the md components) David -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html