RDF/IMP and IMPX System Management Manual (RDF 1.3+)

Entering RDFCOM Commands
Compaq NonStop™ RDF/IMP and IMPX System Management Manual—522204-001
8-88
Command Overview
•
The imagetrail entries reflect the names of the secondary image trail files to which
each receiver is writing ($DATA03.RDF04.AA000022 and
$DATA04.RDF04.AA000003 in this example).
•
Each updater entry reflects the name of the secondary image file from which it is
reading ($DATA03.RDF04.AA000020 for $RU01, $DATA04.RDF04.AA000003
for $RU02, and so forth, in this example).
Rbyte Addr
The seventh column specifies where in the specified file the particular process is
currently reading.
Cpus
The eighth column specifies the CPUs in which each process pair is running.
Error
The final column lets you know if a process has experienced a critical error. If the
column is blank, no error has occurred. If the column contains asterisks (*****), the
process has experienced a critical error. The occurrence of a critical error could mean
that the backup database is no longer synchronized with the primary database due to
data loss. If asterisks appear in the Error column for any RDF process, you should
examine the messages in the RDF log file or on the RDF log device to determine what is
happening and what corrective action to take.
Asterisks in the Error column continue to appear in every STATUS RDF display until
the error condition has been corrected.
The asterisks will also disappear for updater processes when updating is restarted after
execution of any of the following commands:
•
STOP UPDATE
•
STOP RDF
•
STOP TMF
Note that although the occurrence of a critical error might mean that the primary and
backup databases are no longer synchronized with one another, that is not always the
case. If, for example, the primary CPU of the disk process goes down, all updater
processes affected by that error condition report a file system error and then attempt to
restart. If the error does not occur again when the affected updater processes restart, the
databases are probably still synchronized with one another. In that case, the asterisks are
cleared from subsequent STATUS RDF displays.