TMF Reference Manual (G06.24+)

TMFCOM Commands
HP NonStop TMF Reference Manual—522418-002
3-72
ALTER DATAVOLS
TMF State Requirement
Before you can enter the ALTER DATAVOLS command, TMF must be started.
Usage Guidelines
The volumes acted on by this command must be in the started, disabled, or down
state. (These states, and others, are explained in the discussion of the STATUS
DATAVOLS command.)
Altering a data volume’s RECOVERYMODE from ARCHIVE to ONLINE does not
restore to disk any previously purged audit dumps that are required for online volume
recovery. The volume recovery process itself, however, can restore the required
dumps if they are still available.
Attributes that you do not specify remain unchanged. So, if you omit the optional
RECOVERYMODE parameter, one of the following actions takes place:
•
If one or more previous TMFCOM commands (such as ADD DATAVOLS or ALTER
DATAVOLS) specified the parameter, the value entered in the last of these
commands remains assigned.
•
If no previous TMFCOM command specified the parameter, the originally assigned
default remains assigned.
Examples
The following ALTER DATAVOLS command changes the RECOVERYMODE attribute
to ARCHIVE:
TMF 51> ALTER DATAVOLS $DATA, RECOVERYMODE ARCHIVE
$DATA -- datavol altered.
TMF 52>
Caution. TMF does not guarantee the availability of audit dumps required to perform volume
recovery for data volumes configured with RECOVERYMODE ARCHIVE; those audit dumps
must still exist in the TMF catalog when the recovery is attempted. Sufficient audit dumps are
normally retained if any file on the volume has an online dump recorded in the catalog.