Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

To check if a particular disk is under ASM control
◆
Use the vxisasm utility to check if a particular disk is under ASM control.
# /etc/vx/bin/vxisasm 3pardata0_2799
3pardata0_2799 ACTIVE
# /etc/vx/bin/vxisasm 3pardata0_2798
3pardata0_2798 FORMER
Alternatively, use the vxisforeign utility to check if the disk is under control
of any foreign software like LVM or ASM:
# /etc/vx/bin/vxisforeign 3pardata0_2799
3pardata0_2799 ASM ACTIVE
# /etc/vx/bin/vxisforeign 3pardata0_2798
3pardata0_2798 ASM FORMER
Rootability
Rootability indicates that the volumes containing the root file system and the
system swap area are under VxVM control. Without rootability, VxVM is usually
started after the operating system kernel has passed control to the initial user
mode process at boot time. However, if the volume containing the root file system
is under VxVM control, the kernel starts portions of VxVM before starting the
first user mode process.
Under HP-UX, a bootable root disk contains a Logical Interchange Format (LIF)
area. The LIF LABEL record in the LIF area contains information about the starting
block number, and the length of the volumes that contain the stand and root file
systems and the system swap area. When a VxVM root disk is made bootable, the
LIF LABEL record is initialized with volume extent information for the stand,
root, swap, and dump (if present) volumes.
See “Setting up a VxVM root disk and mirror” on page 119.
From the AR0902 release of HP-UX 11i onward, you can choose to configure either
a VxVM root disk or an LVM root disk at install time.
See the HP-UX Installation and Configuration Guide.
See the Veritas Volume Manager Troubleshooting Guide.
117Administering disks
Rootability