| 1 | lttng-crash(1) |
| 2 | ============== |
| 3 | |
| 4 | |
| 5 | NAME |
| 6 | ---- |
| 7 | lttng-crash - Recover and view LTTng 2 trace buffers in the event of a crash |
| 8 | |
| 9 | |
| 10 | SYNOPSIS |
| 11 | -------- |
| 12 | [verse] |
| 13 | *lttng-crash* [option:--extract='PATH' | option:--viewer='VIEWER'] [option:-v | option:-vv | option:-vvv] |
| 14 | |
| 15 | |
| 16 | DESCRIPTION |
| 17 | ----------- |
| 18 | The https://lttng.org/[_Linux Trace Toolkit: next generation_] is an open |
| 19 | source software package used for correlated tracing of the Linux kernel, |
| 20 | user applications, and user libraries. |
| 21 | |
| 22 | LTTng consists of Linux kernel modules (for Linux kernel tracing) and |
| 23 | dynamically loaded libraries (for user application and library tracing). |
| 24 | |
| 25 | The _`lttng-crash`_ command-line tool is used to recover and view |
| 26 | LTTng trace buffers in the event of a system crash. |
| 27 | |
| 28 | |
| 29 | OPTIONS |
| 30 | ------- |
| 31 | option:-x 'PATH', option:--extract='PATH':: |
| 32 | Extract recovered traces to path 'PATH'; do not execute the trace |
| 33 | viewer. |
| 34 | |
| 35 | option:-v, option:--verbose:: |
| 36 | Increase verbosity. |
| 37 | + |
| 38 | Three levels of verbosity are available, which are triggered by |
| 39 | appending additional `v` letters to the option |
| 40 | (that is, `-vv` and `-vvv`). |
| 41 | |
| 42 | option:-e 'VIEWER', option:--viewer='VIEWER':: |
| 43 | Use trace viewer 'VIEWER' to view the trace buffers. 'VIEWER' is the |
| 44 | absolute path to the viewer command to use, and it can contain |
| 45 | command arguments as well. The trace directory paths are passed to |
| 46 | the 'VIEWER' command as its last arguments. |
| 47 | + |
| 48 | Default: `babeltrace`. |
| 49 | |
| 50 | |
| 51 | Program information |
| 52 | ~~~~~~~~~~~~~~~~~~~ |
| 53 | option:-h, option:--help:: |
| 54 | Show help. |
| 55 | |
| 56 | option:-V, option:--version:: |
| 57 | Show version. |
| 58 | |
| 59 | |
| 60 | EXIT STATUS |
| 61 | ----------- |
| 62 | *0*:: |
| 63 | Success |
| 64 | |
| 65 | *1*:: |
| 66 | Error |
| 67 | |
| 68 | *3*:: |
| 69 | Fatal error |
| 70 | |
| 71 | |
| 72 | include::common-footer.txt[] |
| 73 | |
| 74 | |
| 75 | SEE ALSO |
| 76 | -------- |
| 77 | man:lttng(1), |
| 78 | man:lttng-sessiond(8), |
| 79 | man:lttng-relayd(8), |
| 80 | man:lttng-ust(3), |
| 81 | man:babeltrace(1) |