Re: mdadm and UUIDs for its component drives
On Mon, Jun 27, 2011 at 12:52 AM, martin f krafft <madduck@debian.org> wrote:
> also sprach Tom H <tomh0665@gmail.com> [2011.06.26.2328 +0200]:
>>
>> "mdadm --examine /dev/sda1" returns mdadm UUIDs of the array and
>> the partition. (I've never seen the mdadm UUID of a partition be
>> used for anything. Can an array be assembled by referring to an
>> mdadm UUID of a partition to add a partition? Would it make any
>> sense?!)
>
> Partitions do not have UUIDs. What you are seeing are the MD UUIDs
> stored in the superblock of the sda1 device.
I called them "mdadm UUIDs" rather than "MD UUIDs" but they definitely
exist, are different from the "MD Array UUID", and, AFAIK, unused by
the user tools.
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