VERITAS Volume Manager 3.5 Administrator's Guide (September 2002)

Chapter 2, Administering Disks
Rootability
69
Note If you are adding an uninitialized disk, warning and error messages are displayed
on the console during the vxdiskadd command. Ignore these messages. These
messages should not appear after the disk has been fully initialized; the
vxdiskadd command displays a success message when the initialization
completes.
The interactive dialogforadding adiskusing vxdiskadd is similartothat for vxdiskadm,
described in “Adding a Disk to VxVM” on page 65.
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 71 for details of how to configure
a bootable VxVM root disk from an existing LVM root disk.
Note In theAR0902 releaseof HP-UX 11i, you canchoose to configure either a VxVMroot
disk oran LVM root disk atinstall time. See the HP-UXInstallation and Configuration
Guide for more information.
See the chapter “Recovery from Boot Disk Failure” in the VERITAS Volume Manager
Troubleshooting Guide, for information on how to replace a failed boot disk.