VERITAS Volume Manager 4.1 Troubleshooting Guide

Recovery from Hardware Failure
Reattaching Falled Disks
Chapter 118
c1t1d0 auto:simple mydg03 mydg online
. . .
• Use the vxeditset command to clear the flag for each disk that is marked as failing (in this
example, mydg02):
# vxedit set failing=off mydg02
• Use the vxdisklist command to verify that the failing flag has been cleared:
# vxdisk list
DEVICE TYPE DISK GROUP STATUS
c1t1d0 auto:simple mydg01 mydg online
c1t2d0 auto:simple mydg02 mydg online
c1t3d0 auto:simple mydg03 mydg online
. . .
Reattaching Falled Disks
You can perform a reattach operation if a disk fails completely and hot-relocation is not
possible, or if VxVM is started with some disk drivers unloaded and unloadable (causing disks
to enter the failed state). If the underlying problem has been fixed, you can use the
vxreattach command to reattach the disks without plexes being flagged as STALE. However,
the reattach must occur before any volumes on the disk are started.
The vxreattach command is called as part of disk recovery from the vxdiskadm menus and
during the boot process. If possible, vxreattach reattaches the failed disk media record to the
disk with the same device name. Reattachment places a disk in the same disk group as it was
located in before and retains its original disk media name.
To reattach a failed disk:
1. Use the vxdisklist command to see which disks have failed, as shown in the following
example:
# vxdisk list
DEVICE TYPE DISK GROUP STATUS
c1t1d0 auto:simple mydg01 mydg online
c1t2d0 auto:simple mydg02 mydg online