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man: clarify that ExecStop= is always called

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Fixes #11744.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2019-03-22 13:23:02 +01:00
parent 543e6bd4c2
commit 3aaae27a75
1 changed files with 11 additions and 7 deletions
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18
man/systemd.service.xml
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@ -473,14 +473,18 @@
start-up failed, for example because any of the commands specified in <varname>ExecStart=</varname>,
<varname>ExecStartPre=</varname> or <varname>ExecStartPost=</varname> failed (and weren't prefixed with
<literal>-</literal>, see above) or timed out. Use <varname>ExecStopPost=</varname> to invoke commands when a
service failed to start up correctly and is shut down again. Also note that, service restart requests are
implemented as stop operations followed by start operations. This means that <varname>ExecStop=</varname> and
<varname>ExecStopPost=</varname> are executed during a service restart operation.</para>
service failed to start up correctly and is shut down again. Also note that the stop operation is always
performed if the service started successfully, even if the processes in the service terminated on their
own or were killed. The stop commands must be prepared to deal with that case. <varname>$MAINPID</varname>
will be unset if systemd knows that the main process exited by the time the stop commands are called.</para>
<para>It is recommended to use this setting for commands that communicate with the service requesting clean
termination. When the commands specified with this option are executed it should be assumed that the service is
still fully up and is able to react correctly to all commands. For post-mortem clean-up steps use
<varname>ExecStopPost=</varname> instead.</para></listitem>
<para>Service restart requests are implemented as stop operations followed by start operations. This
means that <varname>ExecStop=</varname> and <varname>ExecStopPost=</varname> are executed during a
service restart operation.</para>
<para>It is recommended to use this setting for commands that communicate with the service requesting
clean termination. For post-mortem clean-up steps use <varname>ExecStopPost=</varname> instead.
</para></listitem>
</varlistentry>
<varlistentry>