[linux-lvm] Altering a Physical Volume's UUID on SATA hard drives [solved]

[Stuart D. Gathman]

On Sat, 18 Aug 2007, A.Lizard wrote:

> I bit-copied a backup LVM disk using dd from a Knoppix LiveCD (based on 
> Debian) and wound up with duplicate volume and uuids, meaning I couldn't 
> mount both the main and backup volumes simultaneously at the same time for 
> subsequent backups. Of course, vgrename is ineffective to allow 
> simultaneous mounting without changing the uuids.

I would suggest copying (bitwise if desired) each LV individually to another
volume group with a different name (and UUID).  This gives you a lot more
flexibility with physical storage for primary vs backup volume groups.
Furthermore, your LV backup procedure can take snapshots of each LV first.

-- 
	      Stuart D. Gathman <stuart at bmsi.com>
    Business Management Systems Inc.  Phone: 703 591-0911 Fax: 703 591-6154
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