How can I mount an old LVM drive into a new system so I can view the old files? I want to mount it as /mnt/backup

fdisk -l

Disk /dev/sda: 160.0 GB, 160000000000 bytes 255 heads, 63 sectors/track, 19452 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System /dev/sda1 * 1 13 104391 83 Linux /dev/sda2 14 19452 156143767+ 8e Linux LVM

Disk /dev/sdb: 160.0 GB, 160000000000 bytes 255 heads, 63 sectors/track, 19452 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System /dev/sdb1 * 1 13 104391 83 Linux /dev/sdb2 14 19452 156143767+ 8e Linux LVM

when I do

mount -t ext3 /dev/sdb2 /mnt/backup mount: wrong fs type, bad option, bad superblock on /dev/sdb2, or too many mounted file systems

any help would be greatly appreciated!

Chuck