taking lvm backup

[Tapas Mishra]

The following is output of my

fdisk -l

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000080

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        1216     9764864   83  Linux
/dev/sda2            1216       60802   478619649    5  Extended
/dev/sda5            1216        3162    15624192   82  Linux swap / Solaris
/dev/sda6            3162       60802   462994432   8e  Linux LVM


and

/dev/sda6 is where 4 LVMs are.

So do I need to mount /dev/sda6 or

mount
/dev/nintendo/lvm1
/dev/nintendo/lvm2
/dev/nintendo/lvm3
/dev/nintendo/lvm4

http://www.tldp.org/HOWTO/LVM-HOWTO/snapshots_backup.html

on above link following link
"13.4.1. Create the snapshot volume"

does it mean to have  I need to create one more LVM which should  hold backups
and then proceed.