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

Removing a Disk from a Disk Group

112 VERITAS Volume Manager Administrator’s Guide

Removing a Disk from a Disk Group

A disk that contains no subdisks can be removed from its disk group with this command:

# vxdg [-g groupname] rmdisk diskname

where the disk group name is only speciﬁed for a disk group other than the default,

rootdg.

For example, to remove disk02 from rootdg, use this command:

# vxdg rmdisk disk02

If the disk has subdisks on it when you try to remove it, the following error message is

displayed:

vxdg:Disk diskname is used by one or more subdisks

Use the -k option to vxdg to remove device assignment. Using the -k option allows you

to remove the disk even if subdisks are present. For more information, see the vxdg(1M)

manual page.

Caution Use of the -k option to vxdg can result in data loss.

Once the disk has been removed from its disk group, you can (optionally) remove it from

VxVM control completely, as follows:

# vxdisk rm devicename

For example, to remove c1t0d0 from VxVM control, use these commands:

# vxdisk rm c1t0d0

You can remove a disk on which some subdisks are deﬁned. For example, you can

consolidate all the volumes onto one disk. If you use vxdiskadm to remove a disk, you

can choose to move volumes off that disk. To do this, run vxdiskadm and select item 2

(Remove a disk) from the main menu.

If the disk is used by some subdisks, this message is displayed:

The following subdisks currently use part of disk disk02:

home usrvol

Subdisks must be moved from disk02 before it can be removed.

Move subdisks to other disks? [y,n,q,?] (default: n)