уничтожить сеанс трассировки LTTng (Destroy an LTTng tracing session)
Имя (Name)
lttng-destroy - Destroy an LTTng tracing session
Синопсис (Synopsis)
lttng [GENERAL OPTIONS] destroy [--no-wait] [--all | SESSION]
Описание (Description)
The lttng destroy command destroys one or more tracing sessions.
If no options are specified, the current tracing session is
destroyed (see lttng-create(1) for more information about the
current tracing session).
If SESSION is specified, the existing tracing session named
SESSION is destroyed. lttng list outputs all the existing tracing
sessions (see lttng-list(1)).
If the --all option is used, all the tracing sessions, as listed
in the output of lttng list, are destroyed.
Destroying a tracing session stops any tracing running within the
latter. By default, the implicit lttng-stop(1) command invoked by
the lttng destroy command ensures that the tracing session's
trace data is valid before returning. With the --no-wait option,
the lttng-stop(1) 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.
Destroying a tracing session does not destroy the recorded trace
data, if any; it frees resources acquired by the session daemon
and tracer side, making sure to flush all trace data.
If at least one rotation occurred during the chosen tracing
session's lifetime (see lttng-rotate(1) and
lttng-enable-rotation(1)), and without the --no-wait option, all
the tracing session's output directory's subdirectories are
considered trace chunk archives once the command returns: it is
safe to read them, modify them, move them, or remove them.
Параметры (Options)
General options are described in lttng(1).
-a, --all
Destroy all tracing sessions.
-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
