I have a centos 5.6 server that has xen domUs installed on their on logical volumes. These logical volumes contain their own volume groups and again their own logical volumes. I want to access the domU logical volumes and tried this: [root at kr ~]# fdisk -l /dev/VolGroup00/LogVol02 Disk /dev/VolGroup00/LogVol02: 274.8 GB, 274877906944 bytes 255 heads, 63 sectors/track, 33418 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/VolGroup00/LogVol02p1 * 1 13 104391 83 Linux /dev/VolGroup00/LogVol02p2 14 16709 134110620 8e Linux LVM [root at kr ~]# kpartx -a /dev/VolGroup00/LogVol02 [root at kr ~]# ls -l /dev/mapper/ total 0 crw------- 1 root root 10, 62 Apr 26 02:19 control brw-rw---- 1 root disk 253, 12 Apr 30 00:45 LogVol02p1 brw-rw---- 1 root disk 253, 13 Apr 30 00:45 LogVol02p2 But when I try make the domU volumegroup accessible I run into problems: [root at kr ~]# vgscan Reading all physical volumes. This may take a while... WARNING: Duplicate VG name VolGroup00: Existing hxNFYw-c1Z6-DB99-SiiK-yRas-eXiI-1w27Z0 (created here) takes precedence over KmwQTQ-jT19-lvvu-H6d0-i4T3-s5Jw-JHnx0M WARNING: Duplicate VG name VolGroup00: Existing hxNFYw-c1Z6-DB99-SiiK-yRas-eXiI-1w27Z0 (created here) takes precedence over KmwQTQ-jT19-lvvu-H6d0-i4T3-s5Jw-JHnx0M Found volume group "VolGroup00" using metadata type lvm2 Found volume group "VolGroup00" using metadata type lvm2 How can I now vgchange to the domU volume group as vgchange does not take the UUID as an argument, just the volume group name...? Regards, Peter