Ralf Gross schrieb: > > > How can I get information about how often a tape drive started/stopped > > > writing to tape? Is there a way to monitor the throughput of the SCSI > > > interface to the drive? > > > > On FreeBSD, I'd tell you to look at iostat. Output looks something > > like this: > > > > $ iostat > > tty twed0 cd0 sa0 > > cpu > > tin tout KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s us ni sy > > in id > > 0 30 31.02 34 1.03 0.00 0 0.00 62.99 1 0.08 3 0 2 > > 0 95 > > > > iostat -w 1 will output one of those lines every second. > > I already tried iostat but I don't get any information about the > throughput of the tape device. > > # iostat /dev/ULTRIUM-TD4-D1 1 -k > Linux 2.6.21-2-amd64 (VU0EA003) 06.10.2007 > > avg-cpu: %user %nice %system %iowait %steal %idle > 1,44 0,00 1,15 0,38 0,00 97,03 > > Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn > > > This seems not so easy on linux, I'll try this: > > http://sourceware.org/systemtap/wiki/WSiostatSCSI
Oh well, it's only possible with a custom kernel. http://sourceware.org/systemtap/wiki/SystemtapOnDebian The best thing would be get the start/stop information directly from the drive, but I doubt that this is possible. Ralf ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
