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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" [
<!ENTITY % entities SYSTEM "custom-entities.ent" >
%entities;
]>
<!--
This file is part of systemd.
Copyright 2012 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
-->
<refentry id="systemd-fstab-generator">
<refentryinfo>
<title>systemd-fstab-generator</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>systemd-fstab-generator</refentrytitle>
<manvolnum>8</manvolnum>
</refmeta>
<refnamediv>
<refname>systemd-fstab-generator</refname>
<refpurpose>Unit generator for /etc/fstab</refpurpose>
</refnamediv>
<refsynopsisdiv>
<para><filename>&rootlibexecdir;/system-generators/systemd-fstab-generator</filename></para>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><filename>systemd-fstab-generator</filename> is a generator
that translates <filename>/etc/fstab</filename> (see
<citerefentry project='man-pages'><refentrytitle>fstab</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for details) into native systemd units early at boot and when
configuration of the system manager is reloaded. This will
instantiate mount and swap units as necessary.</para>
<para>The <varname>passno</varname> field is treated like a simple
boolean, and the ordering information is discarded. However, if
the root file system is checked, it is checked before all the
other file systems.</para>
<para>See
<citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry>
and
<citerefentry><refentrytitle>systemd.swap</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for more information about special <filename>/etc/fstab</filename>
mount options this generator understands.</para>
<para><filename>systemd-fstab-generator</filename> implements
<citerefentry><refentrytitle>systemd.generator</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
</refsect1>
<refsect1>
<title>Kernel Command Line</title>
<para><filename>systemd-fstab-generator</filename> understands the
following kernel command line parameters:</para>
<variablelist class='kernel-commandline-options'>
<varlistentry>
<term><varname>fstab=</varname></term>
<term><varname>rd.fstab=</varname></term>
<listitem><para>Takes a boolean argument. Defaults to
<literal>yes</literal>. If <literal>no</literal>, causes the
generator to ignore any mounts or swaps configured in
<filename>/etc/fstab</filename>. <varname>rd.fstab=</varname>
is honored only by initial RAM disk (initrd) while
<varname>fstab=</varname> is honored by both the main system
and the initrd.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>root=</varname></term>
<listitem><para>Takes the root filesystem to mount in the
initrd. <varname>root=</varname> is honored by the
initrd.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>rootfstype=</varname></term>
<listitem><para>Takes the root filesystem type that will be
passed to the mount command. <varname>rootfstype=</varname> is
honored by the initrd.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>rootflags=</varname></term>
<listitem><para>Takes the root filesystem mount options to
use. <varname>rootflags=</varname> is honored by the
initrd.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>mount.usr=</varname></term>
<listitem><para>Takes the <filename>/usr</filename> filesystem
to be mounted by the initrd. If
<varname>mount.usrfstype=</varname> or
<varname>mount.usrflags=</varname> is set, then
<varname>mount.usr=</varname> will default to the value set in
<varname>root=</varname>.</para>
<para>Otherwise this parameter defaults to the
<filename>/usr</filename> entry found in
<filename>/etc/fstab</filename> on the root filesystem.</para>
<para><varname>mount.usr=</varname> is honored by the initrd.
</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>mount.usrfstype=</varname></term>
<listitem><para>Takes the <filename>/usr</filename> filesystem
type that will be passed to the mount command. If
<varname>mount.usr=</varname> or
<varname>mount.usrflags=</varname> is set, then
<varname>mount.usrfstype=</varname> will default to the value
set in <varname>rootfstype=</varname>.</para>
<para>Otherwise this value will be read from the
<filename>/usr</filename> entry in
<filename>/etc/fstab</filename> on the root filesystem.</para>
<para><varname>mount.usrfstype=</varname> is honored by the
initrd.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>mount.usrflags=</varname></term>
<listitem><para>Takes the <filename>/usr</filename> filesystem
mount options to use. If <varname>mount.usr=</varname> or
<varname>mount.usrfstype=</varname> is set, then
<varname>mount.usrflags=</varname> will default to the value
set in <varname>rootflags=</varname>.</para>
<para>Otherwise this value will be read from the
<filename>/usr</filename> entry in
<filename>/etc/fstab</filename> on the root filesystem.</para>
<para><varname>mount.usrflags=</varname> is honored by the
initrd.</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry project='man-pages'><refentrytitle>fstab</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.swap</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-cryptsetup-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>
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