RDF/IMP and IMPX System Management Manual (RDF 1.4+)

Managing RDF
HP NonStop RDF/IMP and IMPX System Management Manual—524388-001
5-9
TMF Audited Volume Crash
If a state transition failure occurs during execution of a STOP UPDATE command and
the operation appears to be stalled, manually stop all of the RDF updaters by issuing
the following command on the backup system:
STATUS *, PROG RDF-software-loc.RDFUPDO, STOP
TMF Audited Volume Crash
RDF can recover from a crash of a TMF audited volume on the primary system. If the
volume is successfully recovered by volume recovery, then you do not have to perform
any special RDF procedures.
TMF Subsystem Crash
RDF can recover from a TMF crash on the primary system if the TMF volume recovery
operation is successful after the crash. For this recovery, proceed as follows:
1. Stop RDF on the primary system by entering the following command through
RDFCOM:
]STOP RDF
2. Restart TMF by entering the following command sequence through TMFCOM:
~DISABLE DATAVOLS *
~START TMF
Notice that these commands prevent any disk volumes on the local system from
being enabled for TMF operations before starting the subsystem.
3. Reenable all pertinent disk volumes for TMF operations by entering the following
command through TMFCOM:
~ENABLE DATAVOLS *
When this command is executed, TMF performs its volume recovery operation on
the audited volumes, and RDF reads the audit during this operation.
4. Restart your applications.
Caution. Issuing this command in this situation is only safe, however, if this is the backup
system for a single RDF environment.