Logical Volume Manager (LVM) basic commands in AIX
- Put a PVID on a disk
chdev -l hdisk1 -a pv=yes
- PVIDs are automatically placed on a disk when added to a VG Remove a PVID from a disk
chdev -l hdisk1 -a pv=clear
- List all PVs in a system (along) with VG membership
lspv
- Create a VG called datavg using hdisk1 using 64 Meg PPs
mkvg -y datavg -s 64 hdisk1
- Create a LV on (previous) datavg that is 1 Gig in size
mklv -t jfs2 -y datalv datavg 16
- List all LVs on the datavg VG
lsvg -l datavg
- List all PVs in the datavg VG
lsvg -p datavg
- Take the datavg VG offline
varyoffvg datavg
- Remove the datavg VG from the ODM
exportvg datavg
- Import the VG on hdisk5 as datavg
importvg -y datavg hdisk5
- Vary-on the new datavg VG (can use importvg -n)
varyonvg datavg
- List all VGs (known to the ODM)
lsvg
- List all VGs that are on line
lsvg -o
- Check to see if underlying disk in datavg has grown in size
chvg -g datavg
- Move a LV from one PV to another
migratepv -l datalv01 hdisk4 hdisk5
- Delete a VG by removing all PVs with the reducevg command.
reducevg hdisk3 (-d removes any LVs that may be on that PV)
