If you need to go to the group name, you can put in the following –
After the you should get something like this:
brw-rw—- 1 root disk 253, 0 Sep 8 10:28 VolGroup00-LogVol00
brw-rw—- 1 root disk 253, 1 Sep 8 06:27 VolGroup00-LogVol01
In this 253 is the Major and the next number is the minor. In this example there are no devices.