
6.3.4 Varying On and Varying Off Volume Groups
Before administrative activities such as opening of logical volumes and mounting
of file systems can be performed, the relevant volume groups need to be made
available. This can be achieved by varying on a volume group using the
varyonvg command. Likewise, when access to a volume group needs to be
stopped entirely, it can be varied off after unmounting all file systems and
closing all open logical volumes within it. The
varyoffvg command can be used
to vary off a volume group.
During the varying on process, a number of different operations are performed in
order to make a volume group available. They are: ...