Create Volume Group (VG)
Use the cfgmgr command to scan and identify all installed configurations.
#cfgmgr
Use lspv command to see the pv configuration.
#lspv
root@xxx:/>cfgmgr root@xxx:/>lspv hdisk18 00f86d5fa9781a05 rootvg active hdisk27 00f86d5fa99e3994 datavg active hdisk30 none None active
Based on the example above, there is a hdisk30 on the system that has not been configured anything. Use the command bootinfo -s hdiskxx to find out the size of the LUN.
#bootinfo -s hdisk30
root@xxx:/>bootinfo -s hdisk30 3145728
Create a new VG called “backuptmpvg” with the number of PP (physical partition) of 3000 (3TB) with the command:
#mkvg -y backuptmpvg -s 3000 hdisk30
or if you want to add two or more disk
#mkvg -y backuptmpvg -s 3000 hdisk30 hdisk31
If the command can’t be executed because the disk is part of another VG, make sure that you entered the disk settings correctly. If you are going to scratch the disk, you can force it by adding a force condition:
#mkvg -f -y backuptmpvg -s 3000 hdisk30
Run the LSVG command to ensure that the backuptmpvg is created.
#lsvg backuptmpvg
root@xxx:/>lsvg backuptmpvg VOLUME GROUP: backuptmpvg VG IDENTIFIER: 00cb852000004b00000001781272a1ec VG STATE: active PP SIZE: 1024 megabyte(s) VG PERMISSION: read/write TOTAL PPs: 3071 (3144704 megabytes) MAX LVs: 256 FREE PPs: 3071 (3144704 megabytes) LVs: 2 USED PPs: 0 (0 megabytes) OPEN LVs: 2 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: 4064 MAX PVs: 8 LTG size (Dynamic): 256 kilobyte(s) AUTO SYNC: no HOT SPARE: no BB POLICY: relocatable PV RESTRICTION: none INFINITE RETRY: no DISK BLOCK SIZE: 512 CRITICAL VG: no FS SYNC OPTION: no
Create Logical Volume (LV)
For example, create a logical volume with the condition name LV lvbackuptmp with type jfs2 and size 3000 PP’s
#mklv -y lvbackuptmp -t jfs2 backuptmpvg 3000
To see the LV list in the volume group
#lsvg -l backuptmpvg
Create File System (FS)
Create a file system of type jfs2 with mount point / backuptmp
#crfs -v jfs2 -d lvbackuptmp -m /backuptmp -A yes
To ensure that the logical point has a mount point:
#lsvg -l appdata
Mount the file system so that it can be used
#mount /backtuptmp
To make sure the file system is mounted to the system:
#df -g