systemd/man/systemd.automount.html
2015-02-17 11:22:16 +01:00

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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>systemd.automount</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><style>
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<a href="../libudev/index.html">gudev </a><span style="float:right">systemd 219</span><hr><div class="refentry"><a name="systemd.automount"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>systemd.automount — Automount unit configuration</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><p><code class="filename"><em class="replaceable"><code>automount</code></em>.automount</code></p></div><div class="refsect1"><a name="idm140603572960848"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description"></a></h2><p>A unit configuration file whose name ends in
"<code class="literal">.automount</code>" encodes information about a file
system automount point controlled and supervised by
systemd.</p><p>This man page lists the configuration options specific to
this unit type. See
<a href="systemd.unit.html"><span class="citerefentry"><span class="refentrytitle">systemd.unit</span>(5)</span></a>
for the common options of all unit configuration files. The common
configuration items are configured in the generic [Unit] and
[Install] sections. The automount specific configuration options
are configured in the [Automount] section.</p><p>Automount units must be named after the automount
directories they control. Example: the automount point
<code class="filename">/home/lennart</code> must be
configured in a unit file
<code class="filename">home-lennart.automount</code>. For details about the
escaping logic used to convert a file system path to a unit name
see
<a href="systemd.unit.html"><span class="citerefentry"><span class="refentrytitle">systemd.unit</span>(5)</span></a>.</p><p>For each automount unit file a matching mount unit file (see
<a href="systemd.mount.html"><span class="citerefentry"><span class="refentrytitle">systemd.mount</span>(5)</span></a>
for details) must exist which is activated when the automount path
is accessed. Example: if an automount unit
<code class="filename">home-lennart.automount</code> is active and the user
accesses <code class="filename">/home/lennart</code> the mount unit
<code class="filename">home-lennart.mount</code> will be activated.</p><p>Automount units may be used to implement on-demand mounting
as well as parallelized mounting of file systems.</p><p>If an automount point is beneath another mount point in the
file system hierarchy, a dependency between both units is created
automatically.</p></div><div class="refsect1"><a name="idm140603569402144"></a><h2 id="fstab"><code class="filename">fstab</code><a class="headerlink" title="Permalink to this headline" href="#fstab"></a></h2><p>Automount units may either be configured via unit files, or
via <code class="filename">/etc/fstab</code> (see
<a href="fstab.html"><span class="citerefentry"><span class="refentrytitle">fstab</span>(5)</span></a>
for details).</p><p>For details how systemd parses
<code class="filename">/etc/fstab</code> see
<a href="systemd.mount.html"><span class="citerefentry"><span class="refentrytitle">systemd.mount</span>(5)</span></a>.</p><p>If an automount point is configured in both
<code class="filename">/etc/fstab</code> and a unit file, the configuration
in the latter takes precedence.</p></div><div class="refsect1"><a name="idm140603569395984"></a><h2 id="Options">Options<a class="headerlink" title="Permalink to this headline" href="#Options"></a></h2><p>Automount files must include an [Automount] section, which
carries information about the file system automount points it
supervises. The options specific to the [Automount] section of
automount units are the following:</p><div class="variablelist"><dl class="variablelist"><dt id="Where="><span class="term"><code class="varname">Where=</code></span><a class="headerlink" title="Permalink to this term" href="#Where="></a></dt><dd><p>Takes an absolute path of a directory of the
automount point. If the automount point does not exist at time
that the automount point is installed, it is created. This
string must be reflected in the unit filename. (See above.)
This option is mandatory.</p></dd><dt id="DirectoryMode="><span class="term"><code class="varname">DirectoryMode=</code></span><a class="headerlink" title="Permalink to this term" href="#DirectoryMode="></a></dt><dd><p>Directories of automount points (and any
parent directories) are automatically created if needed. This
option specifies the file system access mode used when
creating these directories. Takes an access mode in octal
notation. Defaults to 0755.</p></dd></dl></div></div><div class="refsect1"><a name="idm140603573107840"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also"></a></h2><p>
<a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>,
<a href="systemctl.html"><span class="citerefentry"><span class="refentrytitle">systemctl</span>(1)</span></a>,
<a href="systemd.unit.html"><span class="citerefentry"><span class="refentrytitle">systemd.unit</span>(5)</span></a>,
<a href="systemd.mount.html"><span class="citerefentry"><span class="refentrytitle">systemd.mount</span>(5)</span></a>,
<a href="mount.html"><span class="citerefentry"><span class="refentrytitle">mount</span>(8)</span></a>,
<a href="automount.html"><span class="citerefentry"><span class="refentrytitle">automount</span>(8)</span></a>,
<a href="systemd.directives.html"><span class="citerefentry"><span class="refentrytitle">systemd.directives</span>(7)</span></a>
</p></div></div></body></html>