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2010-10-22blktrace: blktrace documentation updateEdward Shishkin
Fixup for RH bugzilla 595620. Document undocumented blktrace options. Update the man pages. Signed-off-by: Edward Shishkin <edward@redhat.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-10-22blktrace: blkiomon documentation updateEdward Shishkin
Fixup for RH bugzilla 595419. Document blkiomon option -d (--dump-lldd). Add drv_data mask description to blktrace man page. Signed-off-by: Edward Shishkin <edward@redhat.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-09-16blktrace: disallow -o when using multiple devicesAlan D. Brunelle
Document that "-o" does not work when specyfing multiple devices to blktrace, also: enforce this by stopping blktrace when one tries do do this. The technical reason why "-o" doesn't work with multiple devices is because we use multiple threads of execution - one per device/CPU pair - and each of them opens a file named "<prefix>.blktrace.<cpu>". With the "-o" all of the "<prefix>" values are the same - so multiple threads open the same file and try to do output. Not good. Without the "-o" we get unique files named: "<device>.blktrace.<cpu>" - as the tuple (<device>,<cpu>) is unique. Signed-off-by: Alan D. Brunelle <Alan.Brunelle@hp.com>
2010-04-20blktrace: disable kill option - take 2Edward Shishkin
Fixup for 513950. Problem: 'blktrace -d <device> -k' does not kill a running backgound trace. Executing 'blktrace -d <device> -k' for the second time results in "BLKTRACETEARDOWN: Invalid argument" message and then each run of blktrace on that machine prints the following output: BLKTRACESETUP: No such file or directory. The bug: The option -k results in clobbering information about running trace by kernel (blk_trace_remove), while resources (files open in debugfs by the running background blktrace) are not released. Solution: Update documentation: Undocument the non-working "kill" option. Advise to send SIGINT signall via kill(1) to the running background blktrace for its correct termination. Signed-off-by: Edward Shishkin <edward@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-03-26fix trivial typo in manpageEric Sandeen
Fix small typo as reported by Kent Baxley <kbaxley@redhat.com> in Red Hat Bug 489941 - tiny typo in blktrace manpage Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Jens Axboe <axboe@carl.(none)>
2009-03-25Add NOTIFY to activity maskCarl Henrik Lunde
Allow masking in messages by using "-a notify". Signed-off-by: Carl Henrik Lunde <chlunde@ping.uio.no> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-09-26man page typoNathan Scott
This fixes up a formatting problem when displaying the blktrace man pages - just a typo (bold mode not correctly terminated, so it flows on until the next bold-mode-termination a few lines on). Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-08-28blktrace man page: mention buffer size / number of buffers defaults.Jens Axboe
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-08-27blktrace: fix indent typoValerie Henson
Fix minor indentation typo in blktrace man page. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-07-24Add man pagesJens Axboe
Thanks to Bas Zoetekouw <bas@debian.org> for providing these! And shame on me for forgetting to add them to the git repo. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>