How to Mount LVM partitions/disks

Logical volume manager (LVM) is suitable for many occasions, e.g., managing large disk farms, easily re-sizing disk partitions on small systems, and etc. The following quote from wiki LVM page best describes its common uses:

One can think of LVM as a thin software layer on top of the hard disks and partitions, which creates an illusion of continuity and ease-of-use for managing hard-drive replacement, repartitioning, and backup.

Here are steps on how to mount LVM partitions/disks:

1. scan all disks for volume groups:

vgscan


2. scan all disks for logical volumes:

lvscan

The output consists of one line for each logical volume indicating if it is active and its size.

3. change the availability of the logical volume (if it is inactive):


lvchange -a y /dev/vg_name/lv_name

where vg_name is the name of the volume group found by vgscan and lv_name name of the logical volume found by lvscan. You may use vgchange to change the availability of all logical volumes in a specified volume group.

4. mount the logic volume:

mount /dev/vg_name/lv_name /mount/point

where /mount/point is the mount point for the logic volume.