8 lttng-destroy - Destroy LTTng tracing sessions
14 *lttng* ['linkgenoptions:(GENERAL OPTIONS)'] *destroy* [option:--no-wait] [option:--all | 'SESSION']
19 The `lttng destroy` command destroys:
21 With the 'SESSION' argument::
22 The tracing session named 'SESSION'.
24 With the option:--all option::
25 *All* the tracing sessions of the connected session daemon for your
26 Unix user, or for all users if your Unix user is `root`, as listed
27 in the output of `lttng list` (see man:lttng-list(1)).
29 See the ``Session daemon connection'' section of man:lttng(1) to learn
30 how a user application connects to a session daemon.
33 The current tracing session (see man:lttng-concepts(7) to learn more
34 about the current tracing session).
36 In that case, the current tracing session becomes nonexistent.
38 See man:lttng-concepts(7) to learn more about tracing sessions.
40 ``Destroying'' a tracing session means freeing the resources which the
41 LTTng daemons and tracers acquired for it, also making sure to flush all
42 the recorded trace data to either the local file system or the connected
43 LTTng relay daemon (see man:lttng-relayd(8)), depending on the tracing
46 The `destroy` command stops any tracing activity within the selected
47 tracing session(s). By default, the command runs an implicit
48 man:lttng-stop(1) command to ensure that the trace data of the tracing
49 session(s) is valid before it exits. Make the command exit immediately
50 with the option:--no-wait option. In this case, however, the traces(s)
51 might not be valid when the command exits, and there's no way to know
52 when it/they become valid.
54 If, for a tracing session{nbsp}__TS__ to destroy with the `destroy`
55 command, the following statements are true:
57 * You don't specify the option:--no-wait option.
59 * LTTng archived the current trace chunk (see man:lttng-concepts(7))
60 of{nbsp}__TS__ at least once during its lifetime.
62 Then all the subdirectories of the output directory of{nbsp}__TS__
63 (local or remote) are considered trace chunk archives once the `destroy`
64 command exits. In other words, it's safe to read them, modify them, move
67 See the <<examples,EXAMPLES>> section below for usage examples.
70 include::common-lttng-cmd-options-head.txt[]
73 option:-a, option:--all::
74 Destroy all the tracing sessions of your Unix user, or of all users
75 if your Unix user is `root`, as listed in the output of
76 man:lttng-list(1), instead of the current tracing session or the
77 tracing session named 'SESSION'.
79 option:-n, option:--no-wait::
80 Do :not: ensure that the trace data of the tracing session(s) to
81 destroy is valid before exiting.
84 include::common-lttng-cmd-help-options.txt[]
87 include::common-lttng-cmd-after-options.txt[]
93 .Destroy the current tracing session.
101 .Destroy the current tracing session without waiting for completion.
103 See the option:--no-wait option.
107 $ lttng destroy --no-wait
111 .Destroy a specific tracing session.
115 $ lttng destroy my-session
119 .Destroy all tracing sessions.
121 See the option:--all option.
125 $ lttng destroy --all
130 include::common-footer.txt[]
138 man:lttng-concepts(7)