VERITAS Volume Manager 3.5 Administrator's Guide (September 2002)

Reorganizing the Contents of Disk Groups
124 VERITAS Volume Manager Administrator’s Guide
◆ 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 “Disk Group Join Operation” below.
Disk Group Join Operation
These operations are performed on VxVM objects such as disks or top-level volumes, and
include all component objects such assub-volumes, plexesand subdisks.The objectsto be
moved must beself-contained, meaningthat thedisks thatare 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 youexpect. You canuse thelistmove operation withvxdg to helpyou 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.
If the system crashes or a hardware subsystem fails, VxVM attempts to complete or
reverse an incomplete disk group reconfiguration when the system is restarted or the
hardware subsystem is repaired, depending on how far the reconfiguration had
progressed. If one of the disk groups is no longer available because it has been imported
Source Disk Group Target Disk Group
join
Target Disk Group
After
join