LVM: mounting LVM partitions
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Some hard drives now come configured with LVM (Logical Volume Manager). These need to be mounted using a special process.
First you need to ensure you have the relevant tools:
sudo apt-get install lvm2
Then run fdisk to make sure the drive is recognised
sudo fdisk -l
Now run pvscan to scan all for LVM physical volumes on the installed hard drives .
sudo pvscan PV /dev/sda2 VG VolGroup00 lvm2 [74.41 GB / 32.00 MB free] Total: 1 [74.41 GB] / in use: 1 [74.41 GB] / in no VG: 0 [0 ]
Next run vgscan to detect LVM logical volumes (with LVM a partition can span more than one physical disk)
vgscan Reading all physical volumes. This may take a while... Found volume group "VolGroup00" using metadata type lvm2
Now activate these using vgchange
vgchange -a y 2 logical volume(s) in volume group "VolGroup00" now active
Then you can run lvscan to detect the logical volumes. You will see the active partitions on the disks.
lvscan ACTIVE '/dev/VolGroup00/LogVol00' [72.44 GB] inherit ACTIVE '/dev/VolGroup00/LogVol01' [1.94 GB] inherit
You will now be able to mount the partition
mount /dev/VolGroup00/LogVol00 /mnt (often mount /dev/mapper/freegeek-root /mnt )