[lttng-dev] Listing live sessions after a session is destroyed

Marc-André Laperle marc-andre.laperle at ericsson.com
Fri Oct 31 10:47:40 EDT 2014

Hi Jérémie,

Thank you for your response. I am seeing this problem with a different viewer than babeltrace that we are implementing in Trace Compass. I filled a bug here:

> What do you mean by "creating a new viewer"?

I meant opening a new connection to relayd which will create a new "viewer" from relayd's perspective.

Thank you,

From: jeremie.galarneau at gmail.com [jeremie.galarneau at gmail.com] on behalf of Jérémie Galarneau [jeremie.galarneau at efficios.com]
Sent: Thursday, 30 October 2014 2:41 PM
To: Marc-André Laperle
Cc: lttng-dev at lists.lttng.org
Subject: Re: [lttng-dev] Listing live sessions after a session is destroyed

On Wed, Oct 29, 2014 at 5:39 PM, Marc-André Laperle
<marc-andre.laperle at ericsson.com> wrote:
> I have a viewer connected to relayd and attached to a session named "live".
> The session is started then destroyed. Then I list the sessions using the
> same viewer and it returns the destroyed session. If I try to attach to it,
> it returns a status LTTNG_VIEWER_ATTACH_ALREADY. I think this session should
> not be listed or there should be a status that indicates that the session

Hi Marc-André,

That does look like a bug. Would you mind opening a bug on
bugs.lttng.org describing the steps you take along with the babeltrace
(assuming this is the viewer you are using) and relayd verbose logs?
(launch both with -vvv)

> doesn't exist anymore. Or is it expected that I create a new viewer before
> listing the sessions again?

What do you mean by "creating a new viewer"?


> Thank you for the help!
> Marc-Andre
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> lttng-dev mailing list
> lttng-dev at lists.lttng.org
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Jérémie Galarneau
EfficiOS Inc.

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