Mounting Red Hat LVM on Ubuntu

$ sudo apt-get install lvm2
$ sudo modprobe dm-mod

Scan your system for LVM volumes:
$ sudo vgscan

Activate the volume:
$ sudo vgchange -ay vg_troylt

Find the logical volume under LV column:
$ sudo lvs
Example:
LG       VG        ...
lv_root  vg_troylt ...

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

Mount it:
$ sudo mount /dev/vg_troylt/lv_root /media/rh_linux -o ro,user

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