You should use the -g option to specify a disk group to Veritas Volume Manager (VxVM) commands that accept this option. If you do not specify the disk group, VxVM applies rules in the following order until it determines a disk group name:
Use the default disk group name that is specified by the environment variable VXVM_DEFAULTDG. This variable can also be set to one of the reserved system-wide disk group names: bootdg, defaultdg, or nodg.
See Displaying the system-wide boot disk group.
If the variable is undefined, the following rule is applied.
Use the disk group that has been assigned to the system-wide default disk group alias, defaultdg.
If this alias is undefined, the following rule is applied.
If the operation can be performed without requiring a disk group name (for example, an edit operation on disk access records), do so.
If none of these rules succeeds, the requested operation fails.
To display the currently defined system-wide boot disk group, use the following command:
# vxdg bootdg
Veritas Volume Manager (VxVM) enables you to define a system-wide default disk group.
To display the currently defined system-wide default disk group, use the following command:
# vxdg defaultdg
If a default disk group has not been defined, nodg is displayed. You can also use the following command to display the default disk group:
# vxprint -Gng defaultdg 2>/dev/null
In this case, if there is no default disk group, nothing is displayed.
Use the following command to specify the name of the disk group that is aliased by defaultdg:
# vxdctl defaultdg diskgroup
If bootdg is specified as the argument to this command, the default disk group is set to be the same as the currently defined system-wide boot disk group.
If nodg is specified as the argument to the vxdctl defaultdg command, the default disk group is undefined.
The specified disk group is not required to exist on the system.
See the vxdctl(1M) manual page.
See the vxdg(1M) manual page.
More Information
Displaying and specifying the system-wide default disk group