Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

Figure 6-6

Disk group join operation

Source disk group

Join

After join

Target disk group

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.

For site-consistent disk groups, any of the move operations (move, split, and join)

fail if the VxVM objects that are moved would not meet the site consistency

conditions after the move. For example, a volume that is being moved may not

have a plex on one of the sites configured in the target disk group. The volume

would not meet the conditions for the allsites flag in the target disk group. Use

the -f (force) option to enable the operation to succeed, by turning off the allsites

flag on the object.

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 is the self-contained set of objects that corresponds

to a specified set of objects.

253Creating and administering disk groups

Reorganizing the contents of disk groups