Hello Mathieu, In the analysis of COREDUMP using *FLIGHT_RECORDER*, what are the steps I do need to follow for tracing, because If i follow the steps :
1. Connect all markers (ltt-armall) 2. Start tracing (lttctl -Cw /tmp/trace1 trace1) *Till here every thing is fine... w.r.t trace methods involved. Now say If here I get KERNEL_PANIC, then what about my trace data that is still pending and needs to be written to files.* *I mean till I destroy the channels I will not get the trace data !! * How do I resolve this situation !!! where kernel panics and no trace data available for user ? Any input are appreciated !! Thanks, Srikant On Mon, May 24, 2010 at 6:59 PM, srikanth krishnakar <[email protected]>wrote: > Hi Mathieu, > > I am trying to run through the LTTng Flight Recorder test on kernel > Linux-2.6.32.13. Here are the steps I have followed : > > > 1. Compiled the kernel Linux-2.6.32 + Lttng support > > 2. Booted the Lttng kernel > > 3. Loaded all the necessary modules, followed by : > > 4. Ran "ltt-armall" > > 5. Then started the tracing in flight recorder mode as: > > # lttctl -C -w /tmp/trace3 -o channel.all.overwrite=1 trace3 > > 6. Then destroyed the channels, for write process to take place: > > # lttctl -D trace3 > > > Correct me If i am going wrong in any of the above steps, that are > necessary for flight recorder testing. > > What is the difference do I find in normal LTTng tracing and the Flight > Recorder mode ? What difference does the LTTV-GUI shows for LTTng Flight > recorder mode ? > (Is LKCD any way related to core dump tracing in Flight Recorder mode ?) > > Are there any additional steps required for carrying out the tracing in > Flight recorder mode for CORE DUMP tracing. > > All the steps i have followed are from : > http://lttng.org/cgi-bin/gitweb.cgi?p=lttv.git;a=blob_plain;f=LTTngManual.html#flight > > Any pointers would be appreciated !! > > Thanks in Advance ! > > Regards > Srikanth Krishnakar > ********************** > -- "The Good You Do, The Best You GET" Regards Srikanth Krishnakar **********************
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