[CentOS] can't mount an LVM volume inCentos 5.10

Wed Apr 1 20:10:15 UTC 2015
Dave Stevens <geek at uniserve.com>

I have a degraded raid array (originally raid-10, now only two drives)  
that contains an LVM volume. I can see in the appended text that the  
Xen domains are there but I don't see how to mount them. No doubt this  
is just ignorance on my part but I wonder if anyone would care to  
direct me? I want to be able to retrieve dom-0 and one of the dom-Us  
to do data recovery, the others are of no interest.

Suggestions? Will rtfm if directed.

Dave

excerpt from failed mount attempts

--------------- starting here ------------

root at Microknoppix:/home/knoppix# vgchange -ay bulkley
   Volume group "bulkley" not found
root at Microknoppix:/home/knoppix# vgchange -ay /dev/VolGroup00/bulkley
   Invalid volume group name: VolGroup00/bulkley
   Run `vgchange --help' for more information.
root at Microknoppix:/home/knoppix# vgimport -f VolGroup00
   Volume group "VolGroup00" is not exported
root at Microknoppix:/home/knoppix# vgchange -ay VolGroup00
   8 logical volume(s) in volume group "VolGroup00" now active
root at Microknoppix:/home/knoppix# lvscan
   ACTIVE            '/dev/VolGroup00/Dom0' [40.00 GiB] inherit
   ACTIVE            '/dev/VolGroup00/babine' [100.00 GiB] inherit
   ACTIVE            '/dev/VolGroup00/centos-template' [100.00 GiB] inherit
   ACTIVE            '/dev/VolGroup00/bulkley-old' [100.00 GiB] inherit
   ACTIVE            '/dev/VolGroup00/ubuntu' [10.00 GiB] inherit
   ACTIVE            '/dev/VolGroup00/morice' [200.00 GiB] inherit
   ACTIVE            '/dev/VolGroup00/oldserver' [80.00 GiB] inherit
   ACTIVE            '/dev/VolGroup00/bulkley' [100.00 GiB] inherit
root at Microknoppix:/home/knoppix# mount /dev/mapper/VolGroup00 aa
mount: special device /dev/mapper/VolGroup00 does not exist
root at Microknoppix:/home/knoppix# mount /dev/mapper/bulkley aa
mount: special device /dev/mapper/bulkley does not exist
root at Microknoppix:/home/knoppix# mount /dev/mapper/dev/VolGroup00 aa
mount: special device /dev/mapper/dev/VolGroup00 does not exist
root at Microknoppix:/home/knoppix# mount /dev/mapper/dev/VolGroup00/bulkley aa
mount: special device /dev/mapper/dev/VolGroup00/bulkley does not exist
root at Microknoppix:/home/knoppix# mount /dev/mapper/dev/VolGroup00/LogVol00 aa
mount: special device /dev/mapper/dev/VolGroup00/LogVol00 does not exist
root at Microknoppix:/home/knoppix# mount  
/dev/mapper/dev/VolGroup00/LogVol00/bulkley aa
mount: special device /dev/mapper/dev/VolGroup00/LogVol00/bulkley does  
not exist
root at Microknoppix:/home/knoppix# mount /dev/VolGroup00/LogVol00/bulkley aa
mount: special device /dev/VolGroup00/LogVol00/bulkley does not exist

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