VERITAS Volume Manager 3.1 Administrator's Guide

Volume Tasks

Mirroring a Volume

Chapter 6252

Step 9. Remove the temporary volume, using the following command:

# vxedit rm tempvol

For information on an alternative online backup method using the

vxassist command, see “Performing Online Backup”.

Removing a Mirror

When a mirror is no longer needed, you can remove it. Removal of a

mirror is required in the following instances:

• to provide free disk space

• to reduce the number of mirrors in a volume to increase the length of

another mirror and its associated volume. The plexes and subdisks

are removed, then the resulting space can be added to other volumes

• to remove a temporary mirror created to backup a volume and is no

longer required

to change the layout of a mirror from concatenated to striped, or back

NOTE The last valid plex associated with a volume cannot be removed.

CAUTION To save the data on a mirror to be removed, the conﬁguration of that

mirror must be known. Parameters from that conﬁguration (stripe unit

size and subdisk ordering) are critical to the creation of a new mirror to

contain the same data. Before this type of mirror is removed, its

conﬁguration must be recorded.

To dissociate and remove a mirror from the associated volume, use the

following command:

# vxplex -o rm dis

plex_name

For example, to dissociate and remove a mirror named vol01-02, use the

following command:

# vxplex -o rm dis vol01-02

This command removes the mirror vol01-02 and all associated subdisks.