Veritas Volume Manager 5.0.1 Administrator's Guide, HP-UX 11i v3, First Edition, November 2009

Displaying plex information
Listing plexes helps identify free plexes for building volumes. Use the plex (–p)
option to the vxprint command to list information about all plexes.
To display detailed information about all plexes in the system, use the following
command:
# vxprint -lp
To display detailed information about a specific plex, use the following command:
# vxprint [-g diskgroup] -l plex
The -t option prints a single line of information about the plex. To list free plexes,
use the following command:
# vxprint -pt
The following section describes the meaning of the various plex states that may
be displayed in the STATE field of vxprint output.
Plex states
Plex states reflect whether or not plexes are complete and are consistent copies
(mirrors) of the volume contents. VxVM utilities automatically maintain the plex
state. However, if a volume should not be written to because there are changes to
that volume and if a plex is associated with that volume, you can modify the state
of the plex. For example, if a disk with a particular plex located on it begins to fail,
you can temporarily disable that plex.
A plex does not have to be associated with a volume. A plex can be created with
the vxmake plex command and be attached to a volume later.
VxVM utilities use plex states to:
■ indicate whether volume contents have been initialized to a known state
■ determine if a plex contains a valid copy (mirror) of the volume contents
■ track whether a plex was in active use at the time of a system failure
■ monitor operations on plexes
This section explains the individual plex states in detail.
See the Veritas Volume Manager Troubleshooting Guide.
Table 6-1shows the states that may be associated with a plex.
261Creating and administering plexes
Displaying plex information