Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

Determining the DCO version number
To use the instant snapshot and DRL-enabled DCO features, you must use a version
20 DCO, rather than version 0 DCO.
To find out the version number of a DCO that is associated with a volume
1
Use the vxprint command on the volume to discover the name of its DCO.
Enter the following:
# DCONAME=`vxprint [-g diskgroup] -F%dco_name volume`
2
Use the vxprint command on the DCO to determine its version number. Enter
the following:
# vxprint [-g diskgroup] -F%version $DCONAME
Administering volumes
Preparing a volume for DRL and instant snapshots
362