man/modules-load.d.xml

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   7   Copyright 2011 Lennart Poettering
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  22 <refentry id="modules-load.d">
  23
  24         <refentryinfo>
  25                 <title>modules-load.d</title>
  26                 <productname>systemd</productname>
  27
  28                 <authorgroup>
  29                         <author>
  30                                 <contrib>Developer</contrib>
  31                                 <firstname>Lennart</firstname>
  32                                 <surname>Poettering</surname>
  33                                 <email>lennart@poettering.net</email>
  34                         </author>
  35                 </authorgroup>
  36         </refentryinfo>
  37
  38         <refmeta>
  39                 <refentrytitle>modules-load.d</refentrytitle>
  40                 <manvolnum>5</manvolnum>
  41         </refmeta>
  42
  43         <refnamediv>
  44                 <refname>modules-load.d</refname>
  45                 <refpurpose>Configure kernel modules to load at boot</refpurpose>
  46         </refnamediv>
  47
  48         <refsynopsisdiv>
  49                 <para><filename>/usr/lib/modules-load.d/*.conf</filename></para>
  50                 <para><filename>/etc/modules-load.d/*.conf</filename></para>
  51                 <para><filename>/run/modules-load.d/*.conf</filename></para>
  52         </refsynopsisdiv>
  53
  54         <refsect1>
  55                 <title>Description</title>
  56
  57                 <para><command>systemd</command> uses
  58                 files from the above directories to configure
  59                 kernel modules to load during boot in a static list.
  60                 Each configuration file is named in the style of
  61                 <filename>/etc/modules-load.d/&lt;program&gt;.conf</filename>. Note
  62                 that it is usually a better idea to use the automatic
  63                 module loading by PCI ID, by DMI ID or similar
  64                 triggers configured in the kernel modules themselves
  65                 instead of relying on static configuration like
  66                 this.</para>
  67         </refsect1>
  68
  69         <refsect1>
  70                 <title>Configuration Format</title>
  71
  72                 <para>The configuration files should simply contain a
  73                 list of kernel module names to load, separated by
  74                 newlines. Empty lines and lines whose first
  75                 non-whitespace character is # or ; are ignored.</para>
  76
  77                 <para>Each configuration file is named in the style of
  78                 <filename>&lt;program&gt;.conf</filename>.
  79                 Files in <filename>/etc/</filename> overwrite
  80                 files with the same name in <filename>/usr/lib/</filename>.
  81                 Files in <filename>/run</filename> overwrite files with
  82                 the same name in <filename>/etc/</filename> and
  83                 <filename>/usr/lib/</filename>. Packages should install their
  84                 configuration files in <filename>/usr/lib/</filename>, files
  85                 in <filename>/etc/</filename> are reserved for the local
  86                 administration, which possibly decides to overwrite the
  87                 configurations installed from packages. All files are sorted
  88                 by filename in alphabetical order, regardless in which of the
  89                 directories they reside, to ensure that a specific
  90                 configuration file takes precedence over another file with
  91                 an alphabetically later name.</para>
  92         </refsect1>
  93
  94         <refsect1>
  95                 <title>Example</title>
  96                 <example>
  97                         <title>/etc/modules-load.d/virtio-net.conf example:</title>
  98
  99                         <programlisting># Load virtio-net.ko at boot
 100 virtio-net</programlisting>
 101                 </example>
 102         </refsect1>
 103
 104         <refsect1>
 105                 <title>See Also</title>
 106                 <para>
 107                         <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 108                         <citerefentry><refentrytitle>modprobe</refentrytitle><manvolnum>8</manvolnum></citerefentry>
 109                 </para>
 110         </refsect1>
 111
 112 </refentry>