Create volume group in AIX

Create a volume group that contains 3 physical volumes with partition size set to 64 megabyte

# mkvg -s 64 hdisk2 hdisk3 hdisk4

Create volume group using all unused “None status” disks

# mkvg -S -y datavg -s ’64’ -n `lspv|grep None| awk ‘{print $1}’| xargs`

reference:
https://www-01.ibm.com/support/knowledgecenter/ssw_aix_71/com.ibm.aix.cmds3/mkvg.htm
http://unix.worldiswelcome.com/how-to-create-volume-group

Create volume group in Linux

1. If creating the volume group from scratch, verify which disk to use to create the volume group. (note: Assuming that disk has already been added)

# fdisk -l

Disk /dev/sdb doesn’t contain a valid partition table.

2. Create the partition inside the added disk and verify.

# cfdisk /dev/sdb
# fdisk -l

3. Create the physical volume with pvcreate and verify using pvdisplay

# pvcreate /dev/sdb1
# pvdisplay /dev/sdb1

4. Create the volume group using vgcreate and verify with vgdisplay.

# vgcreate new_vg /dev/sdb1
# vgdisplay

If adding disk with more than one partition

# vgcreate new_vg /dev/sdb1 /dev/sdb2
# vgdisplay