Mounting lvm2
 

Hi,
I have just reinstalled Centos 5.3 on a new harddisk. I would like to copy some files from another harddisk which is also install with Centos 5.3. I have followed some guide in the internet but failed to mount the old harddisk. I got "unknown filesystem type 'lvm2pv'" error when trying to mount /dev/sdb2. Can anyone help me? Thanks



Details:

[root@ihqtmp ~]# fdisk -l

Disk /dev/sda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x35353535

Device Boot Start End Blocks Id System
/dev/sda1 * 1 64 514048+ 83 Linux
/dev/sda2 65 9729 77634112+ 8e Linux LVM

Disk /dev/dm-0: 76.3 GB, 76302778368 bytes
255 heads, 63 sectors/track, 9276 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

Disk /dev/dm-0 doesn't contain a valid partition table

Disk /dev/dm-1: 3154 MB, 3154116608 bytes
255 heads, 63 sectors/track, 383 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x30307800

Disk /dev/dm-1 doesn't contain a valid partition table

Disk /dev/sdb: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x35353535

Device Boot Start End Blocks Id System
/dev/sdb1 * 1 64 514048+ 83 Linux
/dev/sdb2 65 9729 77634112+ 8e Linux LVM
[root@ihqtmp ~]#

[root@ihqtmp ~]# vgscan
Reading all physical volumes. This may take a while...
Found volume group "VolGroup00" using metadata type lvm2
Found volume group "VolGroup00" using metadata type lvm2
[root@ihqtmp ~]#

[root@ihqtmp ~]# pvscan
PV /dev/sdb2 VG VolGroup00 lvm2 [74.03 GB / 0 free]
PV /dev/sda2 VG VolGroup00 lvm2 [74.03 GB / 32.00 MB free]
Total: 2 [148.06 GB] / in use: 2 [148.06 GB] / in no VG: 0 [0 ]
[root@ihqtmp ~]#

You have two volume groups using the same name.
Have you tried booting from the old install and copying the files out of the LVM ?
Then you should be able to mount a normal drive and access the files.

or read this :
http://www.linuxquestions.org/questi...-to-do-375928/

Thanks for the reply smoker. Followed your second suggestion and it fine now. Thanks again