TMF Operations and Recovery Guide (G06.24+)

Occasional Operations

HP NonStop TMF Operations and Recovery Guide—522417-002

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Replacing Damaged Data Volumes

If a data volume gets physically damaged and you need to replace it, the proper way to

do so is as follows:

1. Issue a DISABLE DATAVOL command to shut down the damaged volume.

2. Issue a DELETE DATAVOL command to delete the volume from the TMF

configuration.

If you got an error message in Step 1, indicating that the volume did not shut down

cleanly, you can force the volume to be deleted by including the

ALLOWINCONSISTENCY option in the DELETE DATAVOL command.

3. Replace the damaged disk drive.

4. Use the system restore utility to load any nonaudited files onto the replacement

volume from backup tapes.

5. Specifying the same name as the deleted volume, issue an ADD DATAVOL

command to add the replacement volume to your TMF configuration.

If you get an error message in response to the ADD DATAVOL command,

indicating that one or more of the files on the volume might not be in a consistent

state, you can force the volume to be added by including the

IGNOREPREVIOUSCONFIG option in the ADD DATAVOL command.

6. Issue a RECOVER FILES command of the following form:

TMF 41> RECOVER FILES $volname.*.*

7. Make online dumps of all database tables or files on the added volume.

Moving Data Volumes to Another System

If you need to physically move a configured data volume from one TMF system to

another, the proper way to do so is as follows:

1. Issue a DISABLE DATAVOL command to shut the volume down cleanly within the

TMF environment. Do not use the ABRUPT option.

2. Issue a DELETE DATAVOL command to delete the volume from the TMF

environment.

Caution. After the data volume has been deleted with the ALLOWINCONSISTENCY option,

volume recovery cannot return it to a consistent state.

Caution. Volume recovery cannot repair any inconsistencies that exist when a data volume is

added with IGNOREPREVIOUSCONFIG specified, even if the data volume is returned to its

previous configuration environment.