VERITAS Volume Manager 3.1 Administrator's Guide

Recovery

Reattaching Disks

Chapter 8 335

Reattaching Disks

You can do a disk reattach operation if a disk has a full failure and

hot-relocation is not possible, or if the Volume Manager is started with

some disk drivers unloaded and unloadable (causing disks to enter the

failed state). If the problem is 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, the

vxreattach command reattaches thefailed disk media record to the disk

with the same device name. The reattach occurs in the same disk group

it was located in before and retains its original disk media name.

After a reattach takes place, recovery may not be necessary. The reattach

can fail if the original (or another) cause for the disk failure still exists.

The command vxreattach -c checks whether a reattach is possible, but

does not do the operation. Instead, it displays the disk group and disk

media name where the disk can be reattached.

See the vxreattach(1M) manual page for more information on the

vxreattach command.