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

Displaying Volume Information
226 VERITAS Volume Manager Administrator’s Guide
INVALID Volume State
The contents of an instant snapshot volume no longer represent a true point-in-time image
of the original volume.
NEEDSYNC Volume State
The volume requires a resynchronization operation the next time it is started. For a
RAID-5 volume, a parity resynchronization operation is required.
REPLAY Volume State
The volume is in a transient state as part of a log replay. A log replay occurs when it
becomes necessary to use logged parity and data. This state is only applied to RAID-5
volumes.
SYNC Volume State
The volume is either in read-writeback recovery mode (kernel state is currently
ENABLED) or was in read-writeback mode when the machine was rebooted (kernel state
is DISABLED). With read-writeback recovery, plex consistency is recovered by reading
data from blocks of one plex and writing the data to all other writable plexes. If the
volume is ENABLED, this means that the plexes are being resynchronized through the
read-writeback recovery. If the volume is DISABLED, it means that the plexes were being
resynchronized through read-writeback when the machine rebooted and therefore still
need to be synchronized.
For a RAID-5 volume, the volume is either undergoing a parity resynchronization (kernel
state is currently ENABLED) or was having its parity resynchronized when the machine
was rebooted (kernel state is DISABLED).
Note The interpretation of these flags during volume startup is modified by the persistent
state log for the volume (for example, the DIRTY
/CLEAN flag). If the clean flag is
set, an ACTIVE volume was not written to by any processes or was not even open at
the time of the reboot; therefore, it can be considered CLEAN. The clean flag is
always set in any case where the volume is marked CLEAN.