VERITAS Volume Manager 4.1 Administrator's Guide

Chapter 4 175
• join—removes all VxVM objects from an imported disk group and
moves them to an imported target disk group. The source disk group
is removed when the join is complete. The join operation is
illustrated in Figure 4-3, “Disk Group Join Operation,” below.
Figure 4-3 Disk Group Join Operation
These operations are performed on VxVM objects such as disks or
top-level volumes, and include all component objects such as
sub-volumes, plexes and subdisks. The objects to be moved must be
self-contained, meaning that the disks that are moved must not contain
any other objects that are not intended for the move.
If you specify one or more disks to be moved, all VxVM objects on the
disks are moved. You can use the -o expand option to ensure that vxdg
moves all disks on which the specified objects are configured. Take care
when doing this as the result may not always be what you expect. You
can use the listmove operation with vxdg to help you establish what are
the self-contained set of objects that correspond to a specified set of
objects.
CAUTION Before moving volumes between disk groups, stop all applications that
are accessing the volumes, and unmount all file systems that are
configured in the volumes.
Source Disk Group Target Disk Group
join
Target Disk Group
After
join