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

Moving Plexes

156 VERITAS Volume Manager Administrator’s Guide

Moving Plexes

Moving a plex copies the data content from the original plex onto a new plex. To move a

plex, use the following command:

# vxplex mv original_plex new_plex

For a move task to be successful, the following criteria must be met:

◆ The old plex must be an active part of an active (ENABLED) volume.

◆ The new plex must be at least the same size or larger than the old plex.

◆ The new plex must not be associated with another volume.

The size of the plex has several implications:

◆ If the new plex is smaller or more sparse than the original plex, an incomplete copy is

made of the data on the original plex. If an incomplete copy is desired, use the -o

force option to vxplex.

◆ If the new plex is longer or less sparse than the original plex, the data that exists on

the original plex is copied onto the new plex. Any area that is not on the original plex,

but is represented on the new plex, is ﬁlled from other complete plexes associated

with the same volume.

◆ If the new plex is longer than the volume itself, then the remaining area of the new

plex above the size of the volume is not initialized and remains unused.

Copying Plexes

This task copies the contents of a volume onto a speciﬁed plex. The volume to be copied

must not be enabled. The plex cannot be associated with any other volume. To copy a

plex, use the following command:

# vxplex cp volume new_plex

After the copy task is complete, new_plex is not associated with the speciﬁed volume

volume. The plex contains a complete copy of the volume data. The plex that is being

copied should be the samesize orlargerthan thevolume. If the plex being copied islarger

than the volume, an incomplete copy of the data results. For the same reason, new_plex

should not be sparse.