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   lttng-enable-channel    ( 1 )

создать или включить каналы LTTng (Create or enable LTTng channels)
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Ограничения (Limitations)

As of this version of LTTng, it is not possible to perform the
       following actions with the lttng enable-channel command:


       •   Reconfigure a channel once it is created.


       •   Re-enable a disabled channel once its tracing session has
           been active at least once.


       •   Create a channel once its tracing session has been active at
           least once.


       •   Create a user space channel with a given buffering scheme
           (--buffers-uid or --buffers-pid options) and create a second
           user space channel with a different buffering scheme in the
           same tracing session.