HP -UX 11i Administrator's Manual page 135

NOTE: On an HP 9000 server, the boot disk is not partitioned so the physical volume refers
to the entire disk, not the HP-UX partition. Use the following command:
# pvchange -a N /dev/disk/disk14
3. Replace the disk.
For the hardware details on how to replace the disk, see the hardware administrator's guide
for the system or disk array.
If the disk is hot-swappable, replace it.
If the disk is not hot-swappable, shut down the system, turn off the power, and replace the
disk. Reboot the system. Two problems can occur:
If you replaced the disk that you normally boot from, the replacement disk does not contain
the information needed by the boot loader. In this case, interrupt the boot process and
boot from the mirror boot disk, which is configured as the alternate boot path.
If there are only two disks in the root volume group, the system probably fails its quorum
check as described in
in the boot process with the message:
panic: LVM: Configuration failure
In this situation, you must override quorum to boot successfully. Do this by interrupting
the boot process and adding the lq option to the boot command.
For information on the boot process and how to select boot options, see HP-UX System
Administrator's Guide: Configuration Management.
4. Notify the mass storage subsystem that the disk has been replaced.
If the system was not rebooted to replace the failed disk, then run scsimgr before using the
new disk as a replacement for the old disk. For example:
# scsimgr replace_wwid
This command allows the storage subsystem to replace the old disk's LUN World-Wide-Identifier
(WWID) with the new disk's LUN WWID. The storage subsystem creates a new LUN instance
and new device special files for the replacement disk.
5. Determine the new LUN instance number for the replacement disk.
For example:
# ioscan m lun
Class I Lun H/W Path
========================================================================
disk 14 64000/0xfa00/0x0
...
disk 28 64000/0xfa00/0x1c esdisk
0/1/1/1.0x3.0x0
In this example, LUN instance 28 was created for the new disk, with LUN hardware path
64000/0xfa00/0x1c, device special files /dev/disk/disk28 and /dev/rdisk/disk28,
at the same lunpath hardware path as the old disk, 0/1/1/1.0x3.0x0. The old LUN instance
14 for the old disk now has no lunpath associated with it.
"Volume Group Activation Failures" (page
D /dev/rdisk/disk14
Driver S/W State H/W Type Health
esdisk NO_HW
/dev/disk/disk14
/dev/disk/disk14_p1
/dev/disk/disk14_p2
/dev/disk/disk14_p3
CLAIMED
/dev/disk/disk28
DEVICE offline HP MSA Vol
/dev/rdisk/disk14
/dev/rdisk/disk14_p1
/dev/rdisk/disk14_p2
/dev/rdisk/disk14_p3
DEVICE online
/dev/rdisk/disk28
Disk Troubleshooting and Recovery Procedures 135
111). It can panic early
Description
HP MSA Vol