TMF Operations and Recovery Guide (G06.24+)

Occasional Operations

HP NonStop TMF Operations and Recovery Guide—522417-002

3-9

Disabling and Enabling Data Volumes

Data volumes that were in the started state when TMF was last stopped are

automatically started for transaction processing when you next start TMF. You may not

want data volumes to start in the following cases:

•

To prohibit audited activity on a data volume in preparation for hardware servicing,

or to delete it from the TMF configuration

•

To prevent volume recovery from running multiple times on a data volume that is

being started and stopped repeatedly during servicing

You cannot prevent OLTP applications from accessing a started data volume, and can

disable data volumes only when TMF is running.

The DISABLE DATAVOLS Command

To disable specific data volumes, issue the DISABLE DATAVOLS command and

specify the volume names:

TMF 35> DISABLE DATAVOLS ($DATA1, $DATA2)

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 *