[lttng-dev] Trace rotation across sessions

[Jérémie Galarneau]

On Tue, Mar 18, 2014 at 4:52 AM, Amit Margalit <AMITM at il.ibm.com> wrote:
> Hello,
>
> Our system has a running session that stays on continuously.
>
> Occasionally, our customer will upgrade the software, leading to a reboot,
> which in turn means we will have a new session.
>
> Is there any way to make LTTng aware of the total size of all sessions
> (current and past) and simply rotate files to keep the entire set of traces
> under a size limit?
>

The only way I can see this working is by recreating the same session
configuration (with the same output destination) and using lttng
enable-channel's -C (tracefile-size) and -W (tracefile-count) options
to define an upper bound on each trace's size.

Is this what you are looking for?

Jérémie

> Thanks,
>
> Amit Margalit
> IBM XIV - Storage Reinvented
> XIV-NAS Development Team
> Tel. 03-689-7774
> Fax. 03-689-7230
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>



-- 
Jérémie Galarneau
EfficiOS Inc.
http://www.efficios.com