On Tue, Jun 12 2007, Krzysztof Lichota wrote: > Hello! > I am trying to use blktrace on latest Ubuntu kernel for Gutsy > (2.6.22-rc3, git tree is at > git://kernel.ubuntu.com/ubuntu/ubuntu-gutsy.git and web frontend at > http://kernel.ubuntu.com/git). > > I have compiled it with blktrace enabled and when I try to run > blktrace -k to stop tracing, it doesn't do anything, but in dmesg I can > see the messages: > [ 239.499614] DebugFS rmdir on hda failed : directory not empty. > [ 239.499637] DebugFS rmdir on block failed : directory not empty. > > If I try to kill it afterwards using ^C, it shows message "BLKTRACESTOP: > invalid argument", crashes with segmentation fault (core file is empty) > and I cannot start it again. > > This happens if I run blktrace using: blktrace -d /dev/hda -o somefile > (on the same partition which is traced). > > If I use network mode, it works fine. > > blktrace tools are pulled today using git: > $ cat .git/remotes/origin > URL: git://git.kernel.org/pub/scm/linux/kernel/git/axboe/blktrace.git > Pull: refs/heads/master:refs/heads/origin > > Should I investigate it further or is it a known issue?
I think it's a known issue. Don't run blktrace -k unless the trace is really stuck - does it work correctly if you just ctrl-c out of blktrace? -- Jens Axboe - To unsubscribe from this list: send the line "unsubscribe linux-btrace" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
