Dear Ilya,
It works for me, thanks a lot! Jian Li At 2014-11-20 16:19:44, "Ilya Dryomov" <ilya.dryo...@inktank.com> wrote: >On Thu, Nov 20, 2014 at 6:47 AM, lijian <blacker1...@163.com> wrote: >> Hi, >> >> I want to collect linux kernel rbd log, I know it use the dout() method to >> debug after I read the linux kernel code, >> But how to enable it and where I can find it? > >echo 9 > /proc/sysrq-trigger >echo 'module rbd +p' > /sys/kernel/debug/dynamic_debug/control > >with privileges of course. It will log to the kernel ring buffer >(dmesg(1) + whatever persistent log files your distribution pulls that >into). > >Also, you can choose which debug statements to enable to reduce the >amount of output - see Documentation/dynamic-debug-howto.txt in the >kernel tree. > >Thanks, > > Ilya
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