Veritas Volume Manager 4.1 Administrator's Guide (HP-UX 11i v3, February 2007)

Performing Online Relayout
254 VERITAS Volume Manager Administrator’s Guide
Disabling FastResync
Use the vxvol command to turn off Persistent or Non-Persistent FastResync for an
existing volume, as shown here:
# vxvol [-g diskgroup] set fastresync=off volume
Turning FastResync off releases all tracking maps for the specified volume. All subsequent
reattaches will not use the FastResync facility, but perform a full resynchronization of the
volume. This occurs even if FastResync is later turned on.
Performing Online Relayout
Note You need a full license to use this feature.
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:
# vxassist [-b] [-g diskgroup] relayout volume [layout=layout] \
[relayout_options]
Note If specified, the -b option makes relayout of the volume a background task.
The following are valid destination layout configurations as determined by the tables in
“Permitted Relayout Transformations” on page 255:
concat-mirror—concatenated-mirror
concat or span, nostripe, nomirror—concatenated
raid5—RAID-5 (not supported for shared disk groups)
stripe—striped
stripe-mirror—striped-mirror
For example, the following command changes a concatenated volume, vol02, in disk
group, mydg, to a striped volume with the default number of columns, 2, and default
stripe unit size, 64 kilobytes:
# vxassist -g mydg relayout vol02 layout=stripe
On occasions, it may be necessary to perform a relayout on a plex rather than on a
volume. See “Specifying a Plex for Relayout” on page 258 for more information.