Tape monitor daemon (tmd)
The Tape Monitor Daemon is introduced in the version of IBMtape.188.8.131.52
or later. It is designed to run concurrently with the IBMtape driver.
It automatically retrieves and stores the IBM® tape drive diagnostic information (drive
dump) into the /var/opt/IBMtape directory. The
daemon is automatically started when the driver is installed, even
when no tape device is attached on the system. An entry
parent="pseudo" instance=16383; is also entered into the
configuration file of /usr/kernel/drv/IBMtape.conf automatically
for the daemon during the IBMtape driver installation.
The file name of dump presents some useful information. An example of the dump file is
-s Stop any currently running instance of the tape monitor daemon. -r Restart the tape monitor daemon and reload all configuration settings. -d Turn on drive error diagnostic retrieval and storage. This option is enabled by default. -D Turn off drive error diagnostic retrieval and storage. -p <directory> Specify an alternate directory for the storage of drive diagnostic information. Default directory is /var/opt/IBMtape -l <filename> Specify a file for writing daemon related log messages. By default, the tmd only writes status information to the syslog file of /var/adm/messages. -y Turns off writing log messages to syslog. -z Turn off compression. By default, the tmd will use a form of file compression to reduce the size of stored diagnostic information.
000001300148represents the serial number of the tape device,
2004-04-09-14:54:14is the time stamp for the dump retrieval.
Apr 9 14:54:21 Java tmd: Drive dump saved to /var/opt/IBMtape IBMtape.000001300148.2004-04-09-14:54:14.dump.