остановить трассеры LTTng (Stop LTTng tracers)
Имя (Name)
lttng-stop - Stop LTTng tracers
Синопсис (Synopsis)
lttng [GENERAL OPTIONS] stop [--no-wait] [SESSION]
Описание (Description)
The lttng stop command stops the various LTTng tracers for a
given active tracing session.
Stopping the LTTng tracers has the effect that all enabled event
rules within enabled channels cannot make event sources emit
trace events anymore.
A tracing session with no running tracers is said to be inactive.
Inactive tracing sessions can be set active using the
lttng-start(1) command.
If SESSION is omitted, the LTTng tracers are stopped for the
current tracing session (see lttng-create(1) for more information
about the current tracing session). Otherwise, they are stopped
for the existing tracing session named SESSION. lttng list
outputs all the existing tracing sessions (see lttng-list(1)).
By default, the lttng stop command ensures that the tracing
session's trace data is valid before returning to the prompt.
With the --no-wait option, the command finishes immediately,
hence a local trace might not be valid when the command is done.
In this case, there is no way to know when the trace becomes
valid.
If at least one rotation occurred during the chosen tracing
session's lifetime (see lttng-rotate(1) and
lttng-enable-rotation(1)), the lttng stop command renames the
current trace chunk subdirectory and prints the renamed path.
Although it is safe to read the content of this renamed
subdirectory while the tracing session remains inactive (until
the next lttng-start(1)), it is NOT a trace chunk archive: you
need to destroy the tracing session with lttng-destroy(1) or make
a rotation with lttng-rotate(1) to archive it.
Параметры (Options)
General options are described in lttng(1).
-n, --no-wait
Do not ensure that the chosen tracing session's trace data is
valid before returning to the prompt.
Program information
-h, --help
Show command help.
This option, like lttng-help(1), attempts to launch
/usr/bin/man to view the command's man page. The path to the
man pager can be overridden by the LTTNG_MAN_BIN_PATH
environment variable.
--list-options
List available command options.
Переменные окружения (Environment variables)
LTTNG_ABORT_ON_ERROR
Set to 1 to abort the process after the first error is
encountered.
LTTNG_HOME
Overrides the $HOME environment variable. Useful when the
user running the commands has a non-writable home directory.
LTTNG_MAN_BIN_PATH
Absolute path to the man pager to use for viewing help
information about LTTng commands (using lttng-help(1) or
lttng COMMAND --help).
LTTNG_SESSION_CONFIG_XSD_PATH
Path in which the session.xsd session configuration XML
schema may be found.
LTTNG_SESSIOND_PATH
Full session daemon binary path.
The --sessiond-path option has precedence over this
environment variable.
Note that the lttng-create(1) command can spawn an LTTng session
daemon automatically if none is running. See lttng-sessiond(8)
for the environment variables influencing the execution of the
session daemon.
Файлы (Files)
$LTTNG_HOME/.lttngrc
User LTTng runtime configuration.
This is where the per-user current tracing session is stored
between executions of lttng(1). The current tracing session
can be set with lttng-set-session(1). See lttng-create(1) for
more information about tracing sessions.
$LTTNG_HOME/lttng-traces
Default output directory of LTTng traces. This can be
overridden with the --output option of the lttng-create(1)
command.
$LTTNG_HOME/.lttng
User LTTng runtime and configuration directory.
$LTTNG_HOME/.lttng/sessions
Default location of saved user tracing sessions (see
lttng-save(1) and lttng-load(1)).
/usr/local/etc/lttng/sessions
System-wide location of saved tracing sessions (see
lttng-save(1) and lttng-load(1)).
Note
$LTTNG_HOME defaults to $HOME when not explicitly set.
Статус выхода (Exit)
0
Success
1
Command error
2
Undefined command
3
Fatal error
4
Command warning (something went wrong during the command)
Ошибки (баги) (Bugs)
If you encounter any issue or usability problem, please report it
on the LTTng bug tracker <https://bugs.lttng.org/projects/lttng-
tools>.
Ресурсы (Resources)
• LTTng project website <https://lttng.org>
• LTTng documentation <https://lttng.org/docs>
• Git repositories <http://git.lttng.org>
• GitHub organization <http://github.com/lttng>
• Continuous integration <http://ci.lttng.org/>
• Mailing list <http://lists.lttng.org> for support and
development: lttng-dev@lists.lttng.org
• IRC channel <irc://irc.oftc.net/lttng>: #lttng on
irc.oftc.net
