How to mount an external LVM partition under Ubuntu 10.10

by bram

Install lvm2:
$ sudo apt-get install lvm2

Load the necessary module(s):
$ sudo modprobe dm-mod

Scan your system for LVM volumes:
$ sudo vgscan

Activate the volume:
$ sudo vgchange -ay VolGroup00

Find the logical volume that has your external root file system:
$ sudo lvs

Create a mount point for that volume:
$ sudo mkdir /mnt/fcroot

Mount it:
$ sudo mount /dev/VolGroup00/LogVol00 /mnt/fcroot -o ro,user