[ltt-dev] lttctl -D option hangs while trying to destroy trace

Mathieu Desnoyers compudj at krystal.dyndns.org
Fri Oct 30 10:06:50 EDT 2009

* fazlin ahamed (fazlincse at gmail.com) wrote:
> Hi all,
> I am new to using lttng and previously i was using lttng in 2.6.18 without
> any problems. Now when i switched to 2.6.29, i downloaded the corresponding
> patches (patch-2.6.29-lttng-0.121) and ltt-control tool
> (ltt-control-0.70-18082009)..
> I patched the kernel and tried to start/stop tracing using following
> commands:
> lttctl -C -w /tmp/tdir/trace3 -o channel.all.overwrite=1 trace3
> This command ran successfully. And wen i executed
> lttctl -D -w /tmp/tdir/trace3 trace3
> The cmd nevers returns... when i debugged further i found tat "write" call
> to write trace3 to debugfs destroy_trace file hangs.
> Can anyone throw some light on this problem... forgive me if it is silly
> question..

You might want to try with a newer LTTng version (for kernel 2.6.31) and
see if you can reproduce the problem.



> thanks in advance,
> Fazlin

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Mathieu Desnoyers
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