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7bf169bd | 1 | lttng-destroy(1) |
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2 | ================ |
3 | :revdate: 18 January 2018 | |
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4 | |
5 | ||
6 | NAME | |
7 | ---- | |
8 | lttng-destroy - Destroy an LTTng tracing session | |
9 | ||
10 | ||
11 | SYNOPSIS | |
12 | -------- | |
13 | [verse] | |
d0d2c3e4 | 14 | *lttng* ['linkgenoptions:(GENERAL OPTIONS)'] *destroy* [option:--no-wait] [option:--all | 'SESSION'] |
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15 | |
16 | ||
17 | DESCRIPTION | |
18 | ----------- | |
19 | The `lttng destroy` command destroys one or more tracing sessions. | |
20 | ||
21 | If no options are specified, the current tracing session is destroyed | |
7c1a4458 | 22 | (see man:lttng-create(1) for more information about the current |
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23 | tracing session). |
24 | ||
25 | If 'SESSION' is specified, the existing tracing session named 'SESSION' | |
26 | is destroyed. `lttng list` outputs all the existing tracing sessions | |
7c1a4458 | 27 | (see man:lttng-list(1)). |
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28 | |
29 | If the option:--all option is used, *all* the tracing sessions, as listed | |
30 | in the output of `lttng list`, are destroyed. | |
31 | ||
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32 | Destroying a tracing session stops any tracing running within the |
33 | latter. By default, the implicit man:lttng-stop(1) command invoked by | |
34 | the `lttng destroy` command ensures that the tracing session's trace | |
35 | data is valid before returning. With the option:--no-wait option, the | |
36 | man:lttng-stop(1) command finishes immediately, hence a local trace | |
37 | might not be valid when the command is done. In this case, there is no | |
38 | way to know when the trace becomes valid. | |
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39 | |
40 | Destroying a tracing session does not destroy the recorded trace data, | |
41 | if any; it frees resources acquired by the session daemon and tracer | |
42 | side, making sure to flush all trace data. | |
43 | ||
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44 | If at least one rotation occurred during the chosen tracing session's |
45 | lifetime (see man:lttng-rotate(1) and man:lttng-enable-rotation(1)), and | |
46 | without the option:--no-wait option, all the tracing session's output | |
47 | directory's subdirectories are considered trace chunk archives once the | |
48 | command returns: it is safe to read them, modify them, move them, or | |
49 | remove them. | |
50 | ||
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51 | |
52 | include::common-cmd-options-head.txt[] | |
53 | ||
54 | ||
55 | option:-a, option:--all:: | |
56 | Destroy all tracing sessions. | |
57 | ||
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58 | option:-n, option:--no-wait:: |
59 | Do not ensure that the chosen tracing session's trace data is valid | |
60 | before returning to the prompt. | |
61 | ||
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62 | |
63 | include::common-cmd-help-options.txt[] | |
64 | ||
65 | ||
66 | include::common-cmd-footer.txt[] | |
67 | ||
68 | ||
69 | SEE ALSO | |
70 | -------- | |
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71 | man:lttng-create(1), |
72 | man:lttng-set-session(1), | |
73 | man:lttng(1) |