systemd/man/systemd.automount.html
2014-04-27 12:02:08 +02:00

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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 208</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="idm274685387984"></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="idm274685307088"></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="idm274685446816"></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="idm274685440736"></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>(8)</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>