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

Performing online relayout
You can use the vxassist relayout command to reconfigure the layout of a
volume without taking it offline. The general form of this command is as follows:
# vxassist [-b] [-g diskgroup] relayout volume [layout=layout] \
[relayout_options]
If you specify the -b option, relayout of the volume is a background task.
The following destination layout configurations are supported.
Concatenated-mirrorconcat-mirror
Concatenatedconcat
Concatenatednomirror
Concatenatednostripe
RAID-5 (not supported for shared disk groups)raid5
Concatenatedspan
Stripedstripe
See “Permitted relayout transformations” on page 375.
For example, the following command changes the concatenated volume vol02,
in disk group mydg, to a striped volume. By default, the striped volume has 2
columns and a 64 KB striped unit size.:
# vxassist -g mydg relayout vol02 layout=stripe
Sometimes, you may need to perform a relayout on a plex rather than on a volume.
See “Specifying a plex for relayout” on page 379.
Permitted relayout transformations
Table 9-4 shows the supported relayout transformations for concatenated volumes.
Table 9-4
Supported relayout transformations for concatenated volumes
From concatRelayout to
No.concat
No. Add a mirror, and then use vxassist convert instead.concat-mirror
375Administering volumes
Performing online relayout