Bug #452
closedStarting a trace with an unready remote lttng-relayd leaves the trace in an odd state
0%
Description
Here I'm running an lttng session with the intent of streaming the trace to another machine. But the other machine's lttng-relayd has not been started yet (or the IP is wrong, etc.).
$ sudo -H lttng create rsession -U net://131.132.32.77 Session rsession created. Traces will be written in net://131.132.32.77 $ sudo -H lttng enable-event -k sched_switch kernel event sched_switch created in channel channel0 $ sudo -H lttng start Error: Unable to connect to lttng-relayd $ sudo -H lttng start Warning: Tracing already started for session rsession $ sudo -H lttng stop Error: Stoping kernel trace failed $ sudo -H lttng destroy -a Session rsession destroyed
The main bug here is we have an "already started" session which "cannot be stopped".
Also, the "Error: Unable to connect to lttng-relayd" message could be accompanied by a further message stating that the session was started anyway (or, for some other errors, that the start was aborted); as it currently stands the user is unsure whether his 'start' command succeeded or not.
"Error: Stoping kernel trace failed" includes an obvious typo. A separate bug will be filed shortly.
Updated by David Goulet over 11 years ago
- Status changed from New to Confirmed
- Assignee set to David Goulet
- Target version set to 2.2
Updated by David Goulet over 11 years ago
- Target version changed from 2.2 to 2.1 stable
This is actually a 2.1 bug and I can confirm it.
This has been resolved in 2.2 where at the enable-event, the Unable to connect is be printed.
Updated by David Goulet over 11 years ago
- Status changed from Confirmed to Won't fix
2.1-stable is not supported anymore unless it's a security fix.