VxVM Default Disk Groups

Default Disk Groups

Veritas Volume Manager comes with a wide variety of command line utilities, which can be used to create, delete and maintain Veritas objects. When operations are performed with the CLI and no disk group is passed to the “-g” (disk group to use) option, the command will default to using the value assigned to defaultdg. This value of defaultdg is stored in the /etc/vx/volboot file:

$ grep defaultdg /etc/vx/volboot
defaultdg oradg

If you would like to change the default disk group, you can use vxdctl(1m)’s “defaultdg” option:

$ vxdctl defaultdg oof

To verify that the value was changed, you can run vxdg(1m) with the “defaultdg” option:

$ vxdg defaultdg
oof

This can save a lot of typing when creating new Veritas objects!