Hitachi Dynamic Link Manager Software Users Guide for AIX (6.6) (T5208-96010, April 2011)

6. Command Reference
253
time before existing information is overwritten becomes shorter.
-systfs trace-file-size
Specify the size of the trace file in kilobytes. Specify a value from
100 to 16000.
When combined with the specification for the number of trace files, the maximum
size of the trace files that can be collected is
1024000KB.
If the value is changed to something smaller than the value that is currently set,
the execution confirmation message KAPL01097-W will be displayed and the
trace file will be deleted temporarily.
The trace files for which a file size can be set are
hdlmtrn.log (n indicates a file
number from
1 to 64). The trace files are fixed in length. Thus, even if the amount
of written trace information is less than the setting file size, the size of each output
trace file is always the same. When all the trace files become full, the new trace
data will overwrite the oldest trace data.
-systfn number-of-trace-files
Specify the number of trace files. Specify a value from
2 to 64.
When combined with the specification for the trace file size, the maximum total
size of the trace files that can be collected is
1024000KB.
If the value is changed to something smaller than the value that is currently set,
the execution confirmation message KAPL01097-W will be displayed and the
trace file will be deleted temporarily.
The trace files for which the number of files can be set are
hdlmtrn.log (n
indicates a file number from
1 to 64).
-pchk {on [-intvl checking-interval]|off}
Enables or disables path health checking.
on: Enabled
off: Disabled
For a standby host, or a host connected to the Thunder 9500V series, or Hitachi
AMS/WMS series storage system, we recommend that you activate path health
checking so that you can detect errors in paths where I/Os operations do not occur.
When you specify
on, specify the checking interval of path health checking by
specifying the parameter immediately following
on. If you do not specify a
checking interval, path health checking is executed in the following interval:
• When the checking interval has not been specified before:
Every 30 minutes (default setting)
• When the checking interval has been specified before: