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Bug #619
closedlttng enable-channel no longer works as before
Start date:
08/13/2013
Due date:
% Done:
100%
Estimated time:
Description
It used to be you could turn channels on and off during a trace, but that is no longer true:
$ lttng create toy Session toy created. Traces will be written in /home/daniel/lttng-traces/toy-20130813-163606 $ lttng enable-channel -k ch1 Kernel channel ch1 enabled for session toy $ lttng start Tracing started for session toy $ lttng disable-channel -k ch1 Kernel channel ch1 disabled for session toy $ lttng enable-channel -k ch1 Error: Channel ch1: Tracing already started (session toy) Warning: Some command(s) went wrong $ lttng stop Waiting for data availability Tracing stopped for session toy $ lttng enable-channel -k ch1 Error: Channel ch1: Tracing already started (session toy) Warning: Some command(s) went wrong
Once the session is started, you can disable channels but you cannot re-enable them. Even if the trace is paused.
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