[lttng-dev] Module lttng_tracer not found.

[Rui Han]

Thansks. I downloaded the packages and followed the README to install.
My problem has been solved, it turns out the kernel got updated since my
last use of lttng.

Regards,
Rui

On Mon, Jul 30, 2012 at 10:16 AM, Alexandre Montplaisir <
alexmonthy at voxpopuli.im> wrote:

> Hi,
>
> What steps did you use to install LTTng?
>
> Also can you please paste the output of:
> $ apt-cache policy lttng-modules-dkms
>
>
> Thanks,
>
> --
> Alexandre Montplaisir
> DORSAL lab,
> École Polytechnique de Montréal
>
>
>
> On 12-07-29 04:26 PM, Rui Han wrote:
> > Hi,
> >
> > I used lttng last week and didn't touch it ever since. I am trying to use
> > it again. I use lttng list -k, it give me error messages:
> >
> > FATAL: Module lttng_tracer not found.
> > Error: Unable to load module lttng-tracer
> > Error: Unable to remove module lttng-tracer
> > Warning: No kernel tracer available
> > Error: Unable to list kernel events
> >
> > I run kernel tracing as root. At first, I thought I have to start the
> > daemon by lttng-sessiond command. It gave me the error: "Error: Already
> > running daemon." At this time, I can create session, it gave "Session
> > session created. Traces will be written in
> > /root/lttng-traces/session-20120729-160806". However, it failed to
> generate
> > a single term of tracing. While I tried lsmod, there are no lttng related
> > module in the list. Which I remember there were several. The same thing
> > happened to my two ubuntu systems. I restarted the system, it still
> doesn't
> > work. Does any one know how to make lttng work again in this situation?
> >
> > Thank you very much.
> >
> > Best regards,
> > Rui
>
>
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