man/systemd-remount-fs.service.xml

   1 <?xml version="1.0"?>
   2 <!--*-nxml-*-->
   3 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
   4 <!--
   5   SPDX-License-Identifier: LGPL-2.1+
   6 -->
   7 <refentry id="systemd-remount-fs.service">
   8
   9   <refentryinfo>
  10     <title>systemd-remount-fs.service</title>
  11     <productname>systemd</productname>
  12
  13     <authorgroup>
  14       <author>
  15         <contrib>Developer</contrib>
  16         <firstname>Lennart</firstname>
  17         <surname>Poettering</surname>
  18         <email>lennart@poettering.net</email>
  19       </author>
  20     </authorgroup>
  21   </refentryinfo>
  22
  23   <refmeta>
  24     <refentrytitle>systemd-remount-fs.service</refentrytitle>
  25     <manvolnum>8</manvolnum>
  26   </refmeta>
  27
  28   <refnamediv>
  29     <refname>systemd-remount-fs.service</refname>
  30     <refname>systemd-remount-fs</refname>
  31     <refpurpose>Remount root and kernel file systems</refpurpose>
  32   </refnamediv>
  33
  34   <refsynopsisdiv>
  35     <para><filename>systemd-remount-fs.service</filename></para>
  36     <para><filename>/usr/lib/systemd/systemd-remount-fs</filename></para>
  37   </refsynopsisdiv>
  38
  39   <refsect1>
  40     <title>Description</title>
  41
  42     <para><filename>systemd-remount-fs.service</filename> is an
  43     early boot service that applies mount options listed in
  44     <citerefentry project='man-pages'><refentrytitle>fstab</refentrytitle><manvolnum>5</manvolnum></citerefentry>
  45     to the root file system, the <filename>/usr</filename> file system,
  46     and the kernel API file systems. This is required so that the
  47     mount options of these file systems — which are pre-mounted by
  48     the kernel, the initial RAM disk, container environments or system
  49     manager code — are updated to those listed in
  50     <filename>/etc/fstab</filename>. This service ignores normal file
  51     systems and only changes the root file system (i.e.
  52     <filename>/</filename>), <filename>/usr</filename> and the virtual
  53     kernel API file systems such as <filename>/proc</filename>,
  54     <filename>/sys</filename> or <filename>/dev</filename>. This
  55     service executes no operation if <filename>/etc/fstab</filename>
  56     does not exist or lists no entries for the mentioned file
  57     systems.</para>
  58
  59     <para>For a longer discussion of kernel API file systems see
  60     <ulink url="https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems">API
  61     File Systems</ulink>.</para>
  62   </refsect1>
  63
  64   <refsect1>
  65     <title>See Also</title>
  66     <para>
  67       <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
  68       <citerefentry project='man-pages'><refentrytitle>fstab</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
  69       <citerefentry project='man-pages'><refentrytitle>mount</refentrytitle><manvolnum>8</manvolnum></citerefentry>
  70     </para>
  71   </refsect1>
  72
  73 </refentry>