TMF Operations and Recovery Guide (G06.26+)

Routine Maintenance
HP NonStop TMF Operations and Recovery Guide—522417-003
2-14
Understanding Data Volume States
Action. When the volume is ready to be used for transaction processing, use the
ENABLE DATAVOLS command.
State: Down
Meaning. The volume would be enabled under normal conditions, but is currently
inaccessible. This can happen because of a physical disk or disk process problem, or
because TMF is stopped.
Action. Repair the disk, if necessary, and bring it back online. If TMF is stopped,
perform any necessary maintenance and then use the START TMF command.
Substates of the Disabled and Down States
Data volumes in the disabled and down states can be in substates called clean and
dirty. A data volume is clean if the audited files on the volume have not been updated
since the volume was last shut down cleanly. Audited files on a clean data volume
have no inconsistencies.
A data volume is dirty if it was not shut down successfully. This can happen:
•
If the data volume is down or goes down during shutdown processing
•
If the ABRUPT option is used in the DISABLE DATAVOLS command
•
If the data volume does not start successfully
Audited files on a dirty data volume may contain logical or physical inconsistencies.
Volume recovery will repair these files when the data volume is restarted.
State: Shuttingdown
Meaning. The volume is stopping because a STOP TMF command has been issued.
This state normally lasts only a few seconds.
Action. If a volume remains in this state, try to force a takeover of the associated disk
process by using the SCF PRIMARY command, or try to force a takeover of the $TMP
process by using the TMFCOM ALTER TMF, SWITCHPROCESS TMP command. The
SCF PRIMARY command is discussed in the SCF Reference Manual for G-Series
RVUs, and the ALTER TMF, SWITCHPROCESS TMP command is explained in the
TMF Reference Manual.
** WRONG DISK VOLUME MOUNTED **
Meaning. In addition to the data volume states discussed previously, the STATUS
DATAVOLS command may display this message in the State column. The contents of
the physical disk do not match what TMF expected, which typically means that a
different physical disk or an outdated mirror is mounted. As a result, TMF cannot start
this volume.