[lttng-dev] Module lttng_tracer not found.

[Woegerer, Paul]

Sorry, I forgot to CC the list.

On 07/29/2012 10:26 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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> lttng-dev at lists.lttng.org
> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev


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