have you tried:
$ man vgrename
NAME
vgrename - rename a volume group
DESCRIPTION
vgrename renames an existing (see vgcreate(8) ) volume group
Examples
"vgrename /dev/vg02 /dev/my_volume_group" renames existing volume
group "vg02" to "my_volume_group".
"vgrename vg02 my_volume_group" does the same.
-dan
On 5, Jun, 2005, Neil declared:
> [Sorry about the dup; sent this to redhat-list earlier but just
> discovered this list which the more appropriate place.]
>
> Hi-
>
> I lost a machine (bad PS or MB -- disk is fine) and am trying to
> bring up the disk in a second machine in order to access certain
> filesystems from it. The second machine's disk has a single
> volume group 'vg0' containing several logical volumes, 'root',
> 'usr', 'home', etc (/boot is its own primary partition).
> Unfortunately the disk from the dead machine is configured almost
> identically, with a single 'vg0' volume group and some logical
> partitions of the same name.
>
> Booting with both disks in the machine fails; it gets totally
> confused about which /dev/vg0/root (for example) it is supposed
> to be using. I think I can configure lvm.conf so that the second
> disk is ignored by pvscan/vgscan during bootup, but I'm still
> stuck on how to actually mount any of the second disk's LVM
> filesystems because of the name clashes. Somehow I'd like to
> rename the volume group on the second disk to 'vg1', for example.
>
> Anybody have any ideas?
>
> Thanks!
> Neil <nnc@newmexico.com>
>
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> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
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