ServerNet Cluster Manual

SCF Commands for the External ServerNet SAN
Manager Subsystem
ServerNet Cluster Manual—520575-002
9-35
Considerations
RECSIZE bytes
specifies the maximum size for any trace data record. Larger records are
truncated.
SELECT tracelevel
identifies the kind of trace data to be collected. Currently, only PROCESS is
supported.
WRAP | NOWRAP
WRAP specifies that when the trace disk file end-of-file mark is reached, trace data
wraps around to the beginning of the file and overwrites any existing data.
If you omit this option, the default is for wrapping to be turned off (NOWRAP).
STOP
ends the current trace operation.
Considerations
•
With the following exception, only a single ServerNet SAN manager process trace
can be running at any one time.
Exception: one trace can run on the primary and another on the backup
ServerNet SAN manager process if the tracing is started immediately on the
backup (as opposed to when the backup takes over).
•
The BACKUP option takes effect as the backup process takes over from the
primary.
•
For more information on tracing, including the ranges and defaults of the attributes
listed above, see the PTrace Reference Manual.
Examples
•
The following SCF command starts a trace operation on the ServerNet SAN
manager process and writes results into the file named $DATA.SANMAN.TRACE:
> TRACE PROCESS $ZZSMN, TO $DATA.SANMAN.TRACE
•
The following SCF command starts a trace operation on the ServerNet SAN
manager process, writes results into the file named $DATA.SANMAN.TRACE, and
allows trace data at the beginning of the file to be overwritten when the end of file
(EOF) is reached:
> TRACE PROCESS $ZZSMN, TO $DATA.SANMAN.TRACE, WRAP
•
The next example stops the trace:
> TRACE PROCESS $ZZSMN, STOP