5.3. Splitting a Volume Group
In this example, an existing volume group consists of three physical volumes. If there is enough unused space on the physical volumes, a new volume group can be created without adding new disks.
In the initial set up, the logical volume
mylvis carved from the volume group
myvol, which in turn consists of the three physical volumes,
After completing this procedure, the volume group
myvgwill consist of
/dev/sdb1. A second volume group,
yourvg, will consist of
5.3.1. Determining Free Space
You can use the
pvscancommand to determine how much free space is currently available in the volume group.
pvscanPV /dev/sda1 VG myvg lvm2 [17.15 GB / 0 free] PV /dev/sdb1 VG myvg lvm2 [17.15 GB / 12.15 GB free] PV /dev/sdc1 VG myvg lvm2 [17.15 GB / 15.80 GB free] Total: 3 [51.45 GB] / in use: 3 [51.45 GB] / in no VG: 0 [0 ]