TMF Reference Manual (G06.24+)

TMFCOM Commands
HP NonStop TMF Reference Manual—522418-002
3-95
ALTER TMF
You can restart TMF with a START TMF command.
If the configuration volume becomes inaccessible to the TMFMON2 process, the TMP
fails. To recover from this situation, issue an ALTER TMF command that specifies the
old configuration volume.
Switching the Primary and Backup TMP Process
With the SWITCHPROCESS TMP option, the ALTER TMF command causes the
primary TMP process to pass control to the backup TMP process. Thus, the primary
process becomes the backup, and the backup process becomes the primary.
The SWITCHPROCESS TMP option only takes effect when a backup TMP process
exists.
Examples
This ALTER TMF command changes the configuration volume from $SYSTEM to
$CAT01:
TMF 76> ALTER TMF, CONFIGVOL $CAT01
The following command switches the primary and backup TMP processes:
TMF 77> ALTER TMF, SWITCHPROCESS TMP
Caution. Be very careful when entering the ALTER TMF command with the CONFIGVOL
option, because this command makes the previous TMF configuration inaccessible by
changing the configuration volume. Because your TMF configuration is thereafter defined on
the new configuration volume, it is a good precaution to ensure that this volume is a member of
a mirrored disk pair.
To make the previous TMF configuration active again, you must enter another ALTER TMF
command, giving the previous configuration volume name in volume.