]>
Commit | Line | Data |
---|---|---|
65232ea7 | 1 | <?xml version='1.0'?> <!--*-nxml-*--> |
65232ea7 | 2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" |
12b42c76 | 3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> |
65232ea7 LP |
4 | |
5 | <!-- | |
572eb058 ZJS |
6 | SPDX-License-Identifier: LGPL-2.1+ |
7 | ||
65232ea7 LP |
8 | This file is part of systemd. |
9 | ||
10 | Copyright 2010 Lennart Poettering | |
65232ea7 LP |
11 | --> |
12 | ||
13 | <refentry id="systemd.automount"> | |
798d3a52 ZJS |
14 | <refentryinfo> |
15 | <title>systemd.automount</title> | |
16 | <productname>systemd</productname> | |
17 | ||
18 | <authorgroup> | |
19 | <author> | |
20 | <contrib>Developer</contrib> | |
21 | <firstname>Lennart</firstname> | |
22 | <surname>Poettering</surname> | |
23 | <email>lennart@poettering.net</email> | |
24 | </author> | |
25 | </authorgroup> | |
26 | </refentryinfo> | |
27 | ||
28 | <refmeta> | |
29 | <refentrytitle>systemd.automount</refentrytitle> | |
30 | <manvolnum>5</manvolnum> | |
31 | </refmeta> | |
32 | ||
33 | <refnamediv> | |
34 | <refname>systemd.automount</refname> | |
35 | <refpurpose>Automount unit configuration</refpurpose> | |
36 | </refnamediv> | |
37 | ||
38 | <refsynopsisdiv> | |
39 | <para><filename><replaceable>automount</replaceable>.automount</filename></para> | |
40 | </refsynopsisdiv> | |
41 | ||
42 | <refsect1> | |
43 | <title>Description</title> | |
44 | ||
45 | <para>A unit configuration file whose name ends in | |
46 | <literal>.automount</literal> encodes information about a file | |
47 | system automount point controlled and supervised by | |
48 | systemd.</para> | |
49 | ||
50 | <para>This man page lists the configuration options specific to | |
51 | this unit type. See | |
52 | <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> | |
53 | for the common options of all unit configuration files. The common | |
54 | configuration items are configured in the generic [Unit] and | |
55 | [Install] sections. The automount specific configuration options | |
56 | are configured in the [Automount] section.</para> | |
57 | ||
f4bf8d2f LP |
58 | <para>Automount units must be named after the automount directories they control. Example: the automount point |
59 | <filename noindex='true'>/home/lennart</filename> must be configured in a unit file | |
60 | <filename>home-lennart.automount</filename>. For details about the escaping logic used to convert a file system | |
61 | path to a unit name see | |
62 | <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>. Note that | |
63 | automount units cannot be templated, nor is it possible to add multiple names to an automount unit by creating | |
64 | additional symlinks to its unit file.</para> | |
798d3a52 ZJS |
65 | |
66 | <para>For each automount unit file a matching mount unit file (see | |
67 | <citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry> | |
68 | for details) must exist which is activated when the automount path | |
69 | is accessed. Example: if an automount unit | |
70 | <filename>home-lennart.automount</filename> is active and the user | |
71 | accesses <filename>/home/lennart</filename> the mount unit | |
72 | <filename>home-lennart.mount</filename> will be activated.</para> | |
73 | ||
74 | <para>Automount units may be used to implement on-demand mounting | |
75 | as well as parallelized mounting of file systems.</para> | |
c129bd5d LP |
76 | </refsect1> |
77 | ||
78 | <refsect1> | |
45f09f93 | 79 | <title>Implicit Dependencies</title> |
c129bd5d | 80 | |
45f09f93 | 81 | <para>The following dependencies are implicitly added:</para> |
c129bd5d | 82 | |
45f09f93 JL |
83 | <itemizedlist> |
84 | <listitem><para>If an automount unit is beneath another mount unit in the | |
85 | file system hierarchy, both a requirement and an ordering | |
86 | dependency between both units are created automatically.</para></listitem> | |
c129bd5d | 87 | |
45f09f93 JL |
88 | <listitem><para>An implicit <varname>Before=</varname> dependency is created |
89 | between an automount unit and the mount unit it activates.</para></listitem> | |
90 | </itemizedlist> | |
91 | </refsect1> | |
92 | ||
93 | <refsect1> | |
94 | <title>Default Dependencies</title> | |
95 | ||
96 | <para>The following dependencies are added unless <varname>DefaultDependencies=no</varname> is set:</para> | |
798d3a52 | 97 | |
45f09f93 JL |
98 | <itemizedlist> |
99 | <listitem><para>Automount units acquire automatic <varname>Before=</varname> and | |
100 | <varname>Conflicts=</varname> on <filename>umount.target</filename> in order to be stopped during | |
101 | shutdown.</para></listitem> | |
102 | </itemizedlist> | |
798d3a52 ZJS |
103 | </refsect1> |
104 | ||
105 | <refsect1> | |
106 | <title><filename>fstab</filename></title> | |
107 | ||
108 | <para>Automount units may either be configured via unit files, or | |
109 | via <filename>/etc/fstab</filename> (see | |
3ba3a79d | 110 | <citerefentry project='man-pages'><refentrytitle>fstab</refentrytitle><manvolnum>5</manvolnum></citerefentry> |
798d3a52 ZJS |
111 | for details).</para> |
112 | ||
113 | <para>For details how systemd parses | |
114 | <filename>/etc/fstab</filename> see | |
115 | <citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para> | |
116 | ||
117 | <para>If an automount point is configured in both | |
118 | <filename>/etc/fstab</filename> and a unit file, the configuration | |
119 | in the latter takes precedence.</para> | |
120 | </refsect1> | |
121 | ||
122 | <refsect1> | |
123 | <title>Options</title> | |
124 | ||
125 | <para>Automount files must include an [Automount] section, which | |
126 | carries information about the file system automount points it | |
127 | supervises. The options specific to the [Automount] section of | |
128 | automount units are the following:</para> | |
129 | ||
130 | <variablelist class='unit-directives'> | |
131 | ||
132 | <varlistentry> | |
133 | <term><varname>Where=</varname></term> | |
134 | <listitem><para>Takes an absolute path of a directory of the | |
135 | automount point. If the automount point does not exist at time | |
136 | that the automount point is installed, it is created. This | |
137 | string must be reflected in the unit filename. (See above.) | |
138 | This option is mandatory.</para></listitem> | |
139 | </varlistentry> | |
140 | ||
141 | <varlistentry> | |
142 | <term><varname>DirectoryMode=</varname></term> | |
143 | <listitem><para>Directories of automount points (and any | |
144 | parent directories) are automatically created if needed. This | |
145 | option specifies the file system access mode used when | |
146 | creating these directories. Takes an access mode in octal | |
147 | notation. Defaults to 0755.</para></listitem> | |
148 | </varlistentry> | |
deb0a77c MO |
149 | <varlistentry> |
150 | <term><varname>TimeoutIdleSec=</varname></term> | |
a8eaaee7 | 151 | <listitem><para>Configures an idle timeout. Once the mount has been |
deb0a77c MO |
152 | idle for the specified time, systemd will attempt to unmount. Takes a |
153 | unit-less value in seconds, or a time span value such as "5min 20s". | |
154 | Pass 0 to disable the timeout logic. The timeout is disabled by | |
155 | default.</para></listitem> | |
156 | </varlistentry> | |
798d3a52 ZJS |
157 | </variablelist> |
158 | </refsect1> | |
159 | ||
160 | <refsect1> | |
161 | <title>See Also</title> | |
162 | <para> | |
163 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
164 | <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
165 | <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
166 | <citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
3ba3a79d ZJS |
167 | <citerefentry project='man-pages'><refentrytitle>mount</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
168 | <citerefentry project='die-net'><refentrytitle>automount</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
798d3a52 ZJS |
169 | <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry> |
170 | </para> | |
171 | </refsect1> | |
65232ea7 LP |
172 | |
173 | </refentry> |