You can create three types of volume groups on AIX:
VG type Max-PVs Max-LVs Max-PPs per VG Max-PP per size Normal 32 256 32,512 1 GB Big 128 512 130,048 1 GB Scalable 1024 4096 2,097,152 128 GB
First, identify free disk you want to use. In our case is hdisk2.
[root@aix:/] lspv hdisk0 000fd1bbd4229068 rootvg active hdisk2 000fd1bb7390f5fb None
Create a NORMAL type volume group:
[root@aix:/] mkvg -y normalvg hdisk2 normalvg
Let’s verify:
[root@aix:/] lsvg normalvg VOLUME GROUP: normalvg VG IDENTIFIER: 000fd1bb0000d4000000015982f0724b VG STATE: active PP SIZE: 4 megabyte(s) VG PERMISSION: read/write TOTAL PPs: 511 (2044 megabytes) MAX LVs: 256 FREE PPs: 511 (2044 megabytes) LVs: 0 USED PPs: 0 (0 megabytes) OPEN LVs: 0 QUORUM: 2 (Enabled) TOTAL PVs: 1 VG DESCRIPTORS: 2 STALE PVs: 0 STALE PPs: 0 ACTIVE PVs: 1 AUTO ON: yes MAX PPs per VG: 32512 MAX PPs per PV: 1016 MAX PVs: 32 LTG size (Dynamic): 512 kilobyte(s) AUTO SYNC: no HOT SPARE: no BB POLICY: relocatable PV RESTRICTION: none INFINITE RETRY: no DISK BLOCK SIZE: 512 CRITICAL VG: no
Create a BIG type volume group:
[root@aix:/] mkvg -B -y bigvg hdisk2 bigvg
Let’s verify:
[root@aix:/] lsvg bigvg VOLUME GROUP: bigvg VG IDENTIFIER: 000fd1bb0000d4000000015982f0dd62 VG STATE: active PP SIZE: 4 megabyte(s) VG PERMISSION: read/write TOTAL PPs: 509 (2036 megabytes) MAX LVs: 512 FREE PPs: 509 (2036 megabytes) LVs: 0 USED PPs: 0 (0 megabytes) OPEN LVs: 0 QUORUM: 2 (Enabled) TOTAL PVs: 1 VG DESCRIPTORS: 2 STALE PVs: 0 STALE PPs: 0 ACTIVE PVs: 1 AUTO ON: yes MAX PPs per VG: 130048 MAX PPs per PV: 1016 MAX PVs: 128 LTG size (Dynamic): 512 kilobyte(s) AUTO SYNC: no HOT SPARE: no BB POLICY: relocatable PV RESTRICTION: none INFINITE RETRY: no DISK BLOCK SIZE: 512 CRITICAL VG: no
Create a SCALABLE type volume group:
[root@aix:/] mkvg -y scalablevg -S -P 1024 -v 4096 hdisk2 scalablevg
Let’s verify:
[root@aix:/] lsvg scalablevg VOLUME GROUP: scalablevg VG IDENTIFIER: 000fd1bb0000d4000000015982efddcd VG STATE: active PP SIZE: 4 megabyte(s) VG PERMISSION: read/write TOTAL PPs: 494 (1976 megabytes) MAX LVs: 256 FREE PPs: 494 (1976 megabytes) LVs: 0 USED PPs: 0 (0 megabytes) OPEN LVs: 0 QUORUM: 2 (Enabled) TOTAL PVs: 1 VG DESCRIPTORS: 2 STALE PVs: 0 STALE PPs: 0 ACTIVE PVs: 1 AUTO ON: yes MAX PPs per VG: 32768 MAX PVs: 1024 LTG size (Dynamic): 512 kilobyte(s) AUTO SYNC: no HOT SPARE: no BB POLICY: relocatable MIRROR POOL STRICT: off PV RESTRICTION: none INFINITE RETRY: no DISK BLOCK SIZE: 512 CRITICAL VG: no
You can also convert a VG from BIG or (NORMAL) to SCALABLE using ‘chvg’ command
NOTE: VG must be varyoff before convertion!
[root@nodetest:/] chvg -G newvg 0516-1224 chvg: WARNING, once this operation is completed, volume group newvg cannot be imported into AIX 5.2 or lower versions. Continue (y/n) y 0516-1712 chvg: Volume group newvg changed. newvg can include up to 1024 physical volumes with 2097152 total physical partitions in the volume group. [root@nodetest:/] varyonvg newvg
Article Number: 501
Posted: Thu, Feb 21, 2019 5:44 PM
Last Updated: Thu, Feb 21, 2019 5:44 PM
Online URL: http://kb.ictbanking.net/article.php?id=501