36.7 Adding Swap Space to the Volume Group

In the above section we extended the swap logical volume to use space that was already available in the volume group. If no space is available in the volume group then it will need to be added before the swap can be extended.

Begin by checking the status of the volume group:

# vgs

  VG #PV #LV #SN Attr VSize VFree

  vgubuntu 1 2 0 wz--n- <73.75g 0

The above output indicates that no space is available within the volume group. Suppose, however, that we have a requirement to add 8 GB to the swap on the system. Clearly, this will require the addition of more space to the volume group. For the purposes of this example it will be assumed that a disk that is 8 GB in size and represented by /dev/sdb is available for addition to the volume group. The first step is to turn this partition into a physical volume:

# pvcreate /dev/sdb

  Physical volume "/dev/sdb" successfully...