TMF Operations and Recovery Guide (G06.26+)

Occasional Operations
HP NonStop TMF Operations and Recovery Guide—522417-003
3-10
The ENABLE DATAVOLS Command
The data volumes you specify in the DISABLE DATAVOLS command are shut down for
TMF transaction processing, but they continue to operate for other purposes. (To shut
down the volume completely, name the volume in an SCF STOP DISK command after
you disable it.) The volumes remain in the disabled state, through starts and stops of
TMF, until they are named in an ENABLE DATAVOLS or DELETE DATAVOLS
command.
Use the SCF STOP DISK command as described in the SCF Reference Manual for G-
Series RVUs.
The ENABLE DATAVOLS Command
Use the ENABLE DATAVOLS command to restart a disabled data volume for
transaction processing. If the disk volume is currently accessible (SCF START DISK),
TMF immediately restarts it. If the volume is not accessible (SCF STOP DISK), TMF
puts it in the down state and restarts it automatically the next time it is accessible. You
can determine the state of the volume by using the SCF STATUS DISK command.
Use the SCF START DISK, SCF STOP DISK, and SCF STATUS DISK commands as
described in the SCF Reference Manual for G-Series RVUs.
To enable a specific volume, issue the ENABLE DATAVOLS command and specify the
volume name:
TMF 16> ENABLE DATAVOLS $DATA2
To enable all disabled volumes, issue the command:
TMF 17> ENABLE DATAVOLS *
Disabling/Enabling Data Volumes for Servicing
If you need to disable a configured data volume for servicing, the proper way to do so
is as follows:
1. Issue a DISABLE DATAVOLS command to shut the volume down cleanly within
the TMF environment.
2. Issue an SCF STOP DISK command to bring the volume down within the system
environment.
3. When the service work is done, issue an SCF START DISK command to bring the
volume back up within the system environment.
4. Issue an ENABLE DATAVOLS command to bring the volume back up within the
TMF environment.
If the volume was disabled long enough to have missed a regularly scheduled online
dump cycle, make online dumps of all the audited tables and files on the volume that
you want protected by the TMF file recovery feature.