View source for Adding and extending disks/volumes in LVM

[[Category:Linux]]

In order to use LVM, the partition must be '''type 8e''' instead of 83 when created by fdisk.

Create new PV (Physical Volume) using following command:
 # pvcreate /dev/sdb1

Verify the volume:
 # pvs
 # vgdisplay

Extend the volume group in a new disk:
 # vgextend vg_root /dev/sdb1
This can be used to span this volume across a second disk

Check the new size:
 # vgs
 # pvscan

Get the current available size using:
 # lvdisplay
 # vgdisplay

Increase the size of this logical volume using:
(if the volume has already grown using all the space in the new disk, this is not required)
 # lvextend -l +100G /dev/vg_root/vol1

In addition, it's required to increase the file system in this logical volume as well:
 # resize2fs /dev/vg_root/vol1

Get the current available again size using:
 # lvdisplay
 # vgdisplay