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lttng-save(1)
=============
:revdate: 14 June 2021
NAME
----
lttng-save - Save LTTng recording session configurations
SYNOPSIS
--------
[verse]
*lttng* ['linkgenoptions:(GENERAL OPTIONS)'] *save* [option:--force] [option:--output-path='DIR']
[option:--all | 'SESSION']
DESCRIPTION
-----------
The `lttng save` command saves to files the configurations of:
With the 'SESSION' argument::
The recording session named 'SESSION'.
Without the 'SESSION' argument::
Implicit option:--all option: *all* the recording sessions of the
connected session daemon for your Unix user, or for all users if
your Unix user is `root`, as listed in the output of `lttng list`
(see man:lttng-list(1)).
+
See the ``Session daemon connection'' section of man:lttng(1) to learn
how a user application connects to a session daemon.
See man:lttng-concepts(7) to learn more about recording sessions.
Use the `save` command in conjunction with the man:lttng-load(1) command
to save and restore the complete configurations of recording sessions.
The `save` command does :not: save tracing data, only the recording
session parameters, including the channel and recording event rule
configurations.
The default output directory path is `$LTTNG_HOME/.lttng/sessions`
(`$LTTNG_HOME` defaults to `$HOME`). Override the default output
directory path with the option:--output-path option. Each recording
session configuration file is named __SNAME__++.lttng++,
where{nbsp}__SNAME__ is the original recording session name.
By default, the `save` command does :not: overwrite existing recording
session configuration files: the command fails. Allow the `save` command
to overwrite existing recording session configuration files with the
option:--force option.
See the ``<<examples,EXAMPLES>>'' section below for usage examples.
include::common-lttng-cmd-options-head.txt[]
option:-a, option:--all::
Save all the recording session configurations of your Unix user, or
of all users if your Unix user is `root`, as listed in the output of
man:lttng-list(1), instead of the current recording session or the
recording session named 'SESSION'.
option:-f, option:--force::
Overwrite existing recording session configuration files when
saving.
option:-o 'DIR', option:--output-path='DIR'::
Save recording session configuration files to the directory 'DIR'
instead of `$LTTNG_HOME/.lttng/sessions` (`$LTTNG_HOME` defaults to
`$HOME`).
include::common-lttng-cmd-help-options.txt[]
include::common-lttng-cmd-after-options.txt[]
[[examples]]
EXAMPLES
--------
.Save all the recording session configurations to the default output directory.
====
[role="term"]
----
$ lttng save
----
====
.Save a specific recording session configuration to a specific output directory.
====
See the option:--output-path option.
[role="term"]
----
$ lttng save my-session --output-path=/path/to/sessions
----
====
.Allow LTTng to overwrite existing recording session configuration files when saving.
====
See the option:--force option.
[role="term"]
----
$ lttng save --force
----
====
include::common-footer.txt[]
SEE ALSO
--------
man:lttng(1),
man:lttng-load(1),
man:lttng-concepts(7)
|
