VERITAS Volume Manager 4.1 Administrator's Guide

Administering Volumes

Removing a DCO and DCO Volume

Chapter 8 281

Removing a DCO and DCO Volume

To dissociate a DCO object, DCO volume and any snap objects from a

volume, use the following command:

# vxassist [-g diskgroup] remove log volume logtype=dco

This completely removes the DCO object, DCO volume and any snap

objects. It also has the effect of disabling FastResync for the volume.

Alternatively, you can use the vxdco command to the same effect:

# vxdco [-g diskgroup] [-o rm] dis dco_obj

The default name of the DCO object, dco_obj, for a volume is usually

formed by appending the string _dco to the name of the parent volume.

To ﬁnd out the name of the associated DCO object, use the vxprint

command on the volume.

To dissociate, but not remove, the DCO object, DCO volume and any snap

objects from the volume, myvol, in the disk group, mydg, use the

following command:

# vxdco -g mydg dis myvol_dco

This form of the command dissociates the DCO object from the volume

but does not destroy it or the DCO volume. If the -o rm option is

speciﬁed, the DCO object, DCO volume and its plexes, and any snap

objects are also removed.

NOTE Dissociating a DCO and DCO volume disables Persistent FastResync on

the volume. A full resynchronization of any remaining snapshots is

required when they are snapped back.

For more information, see the vxassist(1M) and vxdco(1M) manual

pages.