You might want to add new PV in existing VG so extend an LV or to grow your VG. In this example, a new 10Gg block device (whether a partition, LUN or new physical disk) is added to an existing Volume Group (VG) containing one fully utilized 10Gb Physical Volume (PV).
Before proceeding, run the following commands – record output for later use.
# fdisk -l /dev/sdc
Disk /dev/sdc: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xdd344dac
Device Boot Start End Blocks Id System
/dev/sdc1 1 1305 10481388+ 83 Linux # cat /proc/partitions | grep sdc 8 16 10485760 sdc 8 17 10481388 sdc1
# pvs PV VG Fmt Attr PSize PFree /dev/sdb1 VolGroupData lvm2 a- 10.00G 4.00M
# vgs VG #PV #LV #SN Attr VSize VFree VolGroupData 1 1 0 wz--n- 10.00G 4.00M
# lvs LV VG Attr LSize Origin Snap% Move Log Copy% Convert LogVolData01 VolGroupData -wi-ao 9.99G
Create new Physical Volume
Create a new Physical Volume (PV) on the new device(s) e.g.:
# pvcreate /dev/sdc1 Writing physical volume data to disk "/dev/sdc1" Physical volume "/dev/sdc1" successfully created
Add the Physical Volume to the Volume Group
Add the new Physical Volume (PV) to the existing Volume Group (VG) e.g.:
# vgextend VolGroupData /dev/sdc1 Volume group "VolGroupData" successfully extended
Verify Volume Group resize
Verify the increased size of the Volume Group e.g.:
# vgs VG #PV #LV #SN Attr VSize VFree VolGroupData 2 1 0 wz--n- 19.99g 10.00g
# vgdisplay VolGroupData --- Volume group --- VG Name VolGroupData System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 5 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 0 Max PV 0 Cur PV 2 Act PV 2 VG Size 19.99 GiB PE Size 4.00 MiB Total PE 5118 Alloc PE / Size 2558 / 9.99 GiB Free PE / Size 2560 / 10.00 GiB VG UUID pkIDJY-jJjd-3R9k-qiER-8VbM-dYkv-LWGEJE
# pvs PV VG Fmt Attr PSize PFree /dev/sdb1 VolGroupData lvm2 a-- 10.00g 4.00m /dev/sdc1 VolGroupData lvm2 a-- 10.00g 10.00g