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<?xml version="1.0"?>
<!--*-nxml-*-->
<!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 2011 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
-->
<refentry id="modules-load.d">
<refentryinfo>
<title>modules-load.d</title>
<productname>systemd</productname>
<authorgroup>
<author>
<contrib>Developer</contrib>
<firstname>Lennart</firstname>
<surname>Poettering</surname>
<email>lennart@poettering.net</email>
</author>
</authorgroup>
</refentryinfo>
<refmeta>
<refentrytitle>modules-load.d</refentrytitle>
<manvolnum>5</manvolnum>
</refmeta>
<refnamediv>
<refname>modules-load.d</refname>
<refpurpose>Configure kernel modules to load at boot</refpurpose>
</refnamediv>
<refsynopsisdiv>
<para><filename>/etc/modules-load.d/*.conf</filename></para>
<para><filename>/run/modules-load.d/*.conf</filename></para>
<para><filename>/usr/lib/modules-load.d/*.conf</filename></para>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><command>systemd</command> uses
files from the above directories to configure
kernel modules to load during boot in a static list.
Each configuration file is named in the style of
<filename>/etc/modules-load.d/<program>.conf</filename>. Note
that it is usually a better idea to use the automatic
module loading by PCI ID, by DMI ID or similar
triggers configured in the kernel modules themselves
instead of relying on static configuration like
this.</para>
</refsect1>
<refsect1>
<title>Configuration Format</title>
<para>The configuration files should simply contain a
list of kernel module names to load, separated by
newlines. Empty lines and lines whose first
non-whitespace character is # or ; are ignored.</para>
<para>Each configuration file is named in the style of
<filename><program>.conf</filename>.
Files in <filename>/etc/</filename> overwrite
files with the same name in <filename>/usr/lib/</filename>.
Files in <filename>/run</filename> overwrite files with
the same name in <filename>/etc/</filename> and
<filename>/usr/lib/</filename>. Packages should install their
configuration files in <filename>/usr/lib/</filename>, files
in <filename>/etc/</filename> are reserved for the local
administration, which possibly decides to overwrite the
configurations installed from packages. All files are sorted
by filename in alphabetical order, regardless in which of the
directories they reside, to ensure that a specific
configuration file takes precedence over another file with
an alphabetically later name.</para>
</refsect1>
<refsect1>
<title>Example</title>
<example>
<title>/etc/modules-load.d/virtio-net.conf example:</title>
<programlisting># Load virtio-net.ko at boot
virtio-net</programlisting>
</example>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>modprobe</refentrytitle><manvolnum>8</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>
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