lttng


No lttng save/load command available


I am trying to save and load xml sesssion configuration using the lttng save/load commands but for some reason couldn't find them on "LTTng Trace Control 2.4.0" version. Does anyone know what version of lttng these commands are available from? Or do I have to compile lttng in a certain way to get this feature?
See below the result of running lttng --help. I see no save or load command.
Thank you.
lttng --help
LTTng Trace Control 2.4.0 - Époque Opaque
usage: lttng [OPTIONS] []
Options:
-V, --version Show version
-h, --help Show this help
--list-options Simple listing of lttng options
--list-commands Simple listing of lttng commands
-v, --verbose Increase verbosity
-q, --quiet Quiet mode
-g, --group NAME Unix tracing group name. (default: tracing)
-n, --no-sessiond Don't spawn a session daemon
--sessiond-path PATH Session daemon full path
--relayd-path PATH Relayd daemon full path
Commands:
add-context Add context to event and/or channel
calibrate Quantify LTTng overhead
create Create tracing session
destroy Tear down tracing session
enable-channel Enable tracing channel
enable-event Enable tracing event
disable-channel Disable tracing channel
disable-event Disable tracing event
list List possible tracing options
set-session Set current session name
snapshot Snapshot buffers of current session name
start Start tracing
stop Stop tracing
version Show version information
view Start trace viewer
Each command also has its own -h, --help option.
Please see the lttng(1) man page for full documentation.
See http://lttng.org for updates, bug reports and news.
You might want to get a later version.
According to the documentation for v2.6:
To save a given tracing session configuration, do:
lttng save my-session
To load a tracing session, simply do:
lttng load my-session
http://lttng.org/docs/#doc-saving-loading-tracing-session
Might not have been a feature in 2.4.
Save and restore was introduced in LTTng 2.5.

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