To be assigned to volume groups and used by the LVM, a disk must be configured as a physical volume.
To configure a disk drive, see Configuring a Disk .
To change an available disk to a physical volume, enter:
chdev -l hdisk3 -a pv=yes
This causes the available disk (hdisk3) to be assigned a physical volume identifier (PVID) if it does not already have one.
Note: This command has no effect if the disk is already a physical volume.