VERITAS Volume Manager 3.5 Administrator's Guide (September 2004)

Creating and Administering Plexes
Displaying Plex Information
Chapter 6 197
DCOSNP Plex State
This state indicates that a data change object (DCO) plex attached to a
volume can be used by a snapshot plex to create a DCO volume during a
snapshot operation.
EMPTY Plex State
Volume creation sets all plexes associated with the volume to the
EMPTY state to indicate that the plex is not yet initialized.
IOFAIL Plex State
The IOFAIL plex state is associated with persistent state logging. When
the vxconfigd daemon detects an uncorrectable I/O failure on an ACTIVE
plex, it places the plex in the IOFAIL state to exclude it from the
recovery selection process at volume start time.
This state indicates that the plex is out-of-date with respect to the
volume, and that it requires complete recovery. It is likely that one or
more of the disks associated with the plex should be replaced.
LOG Plex State
The state of a dirty region logging (DRL) or RAID-5 log plex is always set
to LOG.
OFFLINE Plex State
The vxmend off task indefinitely detaches a plex from a volume by
setting the plex state to OFFLINE. Although the detached plex
maintains its association with the volume, changes to the volume do not
update the OFFLINE plex. The plex is not updated until the plex is put
online and reattached with the vxplex att task. When this occurs, the
plex is placed in the STALE state, which causes its contents to be
recovered at the next vxvol start operation.
SNAPATT Plex State
This state indicates a snapshot plex that is being attached by the
snapstart operation. When the attach is complete, the state for the plex
is changed to SNAPDONE. If the system fails before the attach
completes, the plex and all of its subdisks are removed.