[lttng-dev] A problem

[Mathieu Desnoyers]

* Brosseau, Yannick (yannick.brosseau at gmail.com) wrote:
> Would it be possible to improve the error message to tell the user that it
> needs to connect to a root session?
> 
> I got the same feedback from another user today, so this seem really
> confusing.

Fixed by:

commit 531d29f9e514ad5a4880600d5c7e373f2f254ead
Author: Mathieu Desnoyers <mathieu.desnoyers at efficios.com>
Date:   Fri Mar 2 18:17:33 2012 -0500

    Fix: meaningful error message
    
    Show a meaningful error message to users attempting to do kernel tracing
    without root sessiond/tracing group creds.
    
    Reported-by: "Brosseau, Yannick" <yannick.brosseau at gmail.com>
    Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers at efficios.com>

e.g.:

compudj at thinkos:~$ lttng enable-event -k -a
Error: A root sessiond needs to be running, and user part of the "tracing" group, to activate kernel tracing




-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com