projects / lttng-tools.git / blame
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|---|---|---|
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1 | lttng-load(1) |
| 2 | ============= | |
| 3 | ||
| 4 | ||
| 5 | NAME | |
| 6 | ---- | |
| 7 | lttng-load - Load LTTng tracing session configurations | |
| 8 | ||
| 9 | ||
| 10 | SYNOPSIS | |
| 11 | -------- | |
| 12 | [verse] | |
| ce19b9ed | 13 | *lttng* ['linkgenoptions:(GENERAL OPTIONS)'] *load* [option:--force] [option:--input-path='PATH'] ['SESSION'] |
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14 | |
| 15 | ||
| 16 | DESCRIPTION | |
| 17 | ----------- | |
| 18 | The `lttng load` command loads the configurations of one or more | |
| 19 | tracing sessions from files. | |
| 20 | ||
| 21 | The `lttng load` command is used in conjunction with the | |
| 7c1a4458 | 22 | man:lttng-save(1) command to save and restore the complete |
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23 | configurations of tracing sessions. This includes the enabled channels |
| 24 | and event rules, the context added to channels, the tracing activity, | |
| 25 | and more. | |
| 26 | ||
| 27 | Once one or more tracing session configurations are loaded, they appear | |
| 28 | exactly as they were saved from the user's point of view. | |
| 29 | ||
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30 | The following directories are searched, non-recursively, in this order |
| 31 | for configuration files: | |
| 32 | ||
| 33 | . `$LTTNG_HOME/.lttng/sessions` (`$LTTNG_HOME` defaults to `$HOME`) | |
| 34 | . +{system_sessions_dir}+ | |
| 35 | ||
| 36 | The input path can be overridden with the option:--input-path option. | |
| 37 | When this option is specified, the default directories are :not: | |
| 38 | searched for configuration files. When it's not specified, _both_ | |
| 39 | default directories are searched for configuration files. | |
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40 | |
| 41 | If the input path is a directory, then if 'SESSION' is specified, the | |
| 42 | tracing session configuration named 'SESSION' is searched in all the | |
| 43 | files of this directory and loaded if found. If 'SESSION' is not | |
| 44 | specified, the option:--all option is implicit: all the tracing session | |
| 45 | configurations found in all the files in this directory are loaded. | |
| 46 | ||
| 47 | If the input path is a file, then if 'SESSION' is specified, the tracing | |
| 48 | session configuration named 'SESSION' is searched in this file and | |
| 49 | loaded if found. If 'SESSION' is not specified, the option:--all option | |
| 50 | is implicit: all the tracing session configurations found in this file | |
| 51 | are loaded. | |
| 52 | ||
| 53 | By default, existing tracing sessions are not overwritten when loading; | |
| 54 | the command fails. The option:--force option can be used to allow this. | |
| 55 | ||
| 56 | ||
| 57 | include::common-cmd-options-head.txt[] | |
| 58 | ||
| 59 | ||
| 60 | option:-a, option:--all:: | |
| 61 | Load all tracing session configurations (default). | |
| 62 | ||
| 63 | option:-f, option:--force:: | |
| 64 | Overwrite existing tracing sessions when loading. | |
| 65 | ||
| 66 | option:-i, option:--input-path='PATH':: | |
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67 | Load tracing session configurations from 'PATH', either a directory |
| 68 | or a file, instead of loading them from the default search | |
| 69 | directories. | |
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70 | |
| 71 | ||
| 72 | include::common-cmd-help-options.txt[] | |
| 73 | ||
| 74 | ||
| 75 | include::common-cmd-footer.txt[] | |
| 76 | ||
| 77 | ||
| 78 | SEE ALSO | |
| 79 | -------- | |
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80 | man:lttng-save(1), |
| 81 | man:lttng(1) |