-<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
- This file is part of systemd.
-
- Copyright 2013 Zbigniew Jędrzejewski-Szmek
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
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--->
+<?xml version='1.0'?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+<!-- SPDX-License-Identifier: LGPL-2.1+ -->
<refentry id="systemd.slice">
<refentryinfo>
<title>systemd.slice</title>
<productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Lennart</firstname>
- <surname>Poettering</surname>
- <email>lennart@poettering.net</email>
- </author>
- </authorgroup>
</refentryinfo>
<refmeta>
<refsect1>
<title>Description</title>
- <para>A unit configuration file whose name ends in
- <literal>.slice</literal> encodes information about a slice which
- is a concept for hierarchically managing resources of a group of
- processes. This management is performed by creating a node in the
- Linux Control Group (cgroup) tree. Units that manage processes
- (primarily scope and service units) may be assigned to a specific
- slice. For each slice, certain resource limits may be set that
- apply to all processes of all units contained in that
- slice. Slices are organized hierarchically in a tree. The name of
- the slice encodes the location in the tree. The name consists of a
- dash-separated series of names, which describes the path to the
- slice from the root slice. The root slice is named,
- <filename>-.slice</filename>. Example:
- <filename>foo-bar.slice</filename> is a slice that is located
- within <filename>foo.slice</filename>, which in turn is located in
- the root slice <filename>-.slice</filename>.
+ <para>A unit configuration file whose name ends in <literal>.slice</literal> encodes information about a slice
+ unit. A slice unit is a concept for hierarchically managing resources of a group of processes. This management is
+ performed by creating a node in the Linux Control Group (cgroup) tree. Units that manage processes (primarily scope
+ and service units) may be assigned to a specific slice. For each slice, certain resource limits may be set that
+ apply to all processes of all units contained in that slice. Slices are organized hierarchically in a tree. The
+ name of the slice encodes the location in the tree. The name consists of a dash-separated series of names, which
+ describes the path to the slice from the root slice. The root slice is named <filename>-.slice</filename>. Example:
+ <filename>foo-bar.slice</filename> is a slice that is located within <filename>foo.slice</filename>, which in turn
+ is located in the root slice <filename>-.slice</filename>.
</para>
<para>Note that slice units cannot be templated, nor is possible to add multiple names to a slice unit by creating
- additional symlinks to it.</para>
+ additional symlinks to its unit file.</para>
<para>By default, service and scope units are placed in
<filename>system.slice</filename>, virtual machines and containers
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for the common options of all unit configuration
files. The common configuration items are configured
- in the generic [Unit] and [Install] sections. The
+ in the generic <literal>[Unit]</literal> and <literal>[Install]</literal> sections. The
slice specific configuration options are configured in
- the [Slice] section. Currently, only generic resource control settings
+ the <literal>[Slice]</literal> section. Currently, only generic resource control settings
as described in
<citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry> are allowed.
</para>
<refsect1>
<title>Automatic Dependencies</title>
- <para>Slice units automatically gain dependencies of type
- <varname>After=</varname> and <varname>Requires=</varname> on
- their immediate parent slice unit.</para>
+ <refsect2>
+ <title>Implicit Dependencies</title>
- <para>Unless <varname>DefaultDependencies=false</varname> is used in the <literal>[Unit]</literal> section, slice
- units will implicitly have dependencies of type <varname>Conflicts=</varname> and <varname>Before=</varname> on
- <filename>shutdown.target</filename>. These ensure that slice units are removed prior to system shutdown. Only
- slice units involved with early boot or late system shutdown should disable this option.
- </para>
+ <para>The following dependencies are implicitly added:</para>
+
+ <itemizedlist>
+ <listitem><para>Slice units automatically gain dependencies of type
+ <varname>After=</varname> and <varname>Requires=</varname> on
+ their immediate parent slice unit.</para></listitem>
+ </itemizedlist>
+ </refsect2>
+
+ <refsect2>
+ <title>Default Dependencies</title>
+
+ <para>The following dependencies are added unless <varname>DefaultDependencies=no</varname> is set:</para>
+
+ <itemizedlist>
+ <listitem><para>Slice units will automatically have dependencies of type <varname>Conflicts=</varname> and
+ <varname>Before=</varname> on
+ <filename>shutdown.target</filename>. These ensure that slice units are removed prior to system shutdown.
+ Only slice units involved with late system shutdown should disable
+ <varname>DefaultDependencies=</varname> option.</para></listitem>
+ </itemizedlist>
+ </refsect2>
</refsect1>
<refsect1>
projects / thirdparty / systemd.git / blobdiff