CentOS - Jan 2007 - mount old LVM drive

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
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Chuck Wow wrote:
> 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
>
You need to activate the volume group before you can mount the LVs on 
it.  The system should do this automatically on boot but sometimes you 
have to run it manually.

vgscan
vgchange -a y

mount -t ext3 /dev/my_volume_group/foo /mnt/backup