Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 55 insertions, 0 deletions

diff --git a/man/systemd-volatile-root.service.xml b/man/systemd-volatile-root.service.xml
new file mode 100644
index 0000000..0d3b402
--- /dev/null
+++ b/man/systemd-volatile-root.service.xml
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+<?xml version="1.0"?>
+<!--*-nxml-*-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+  "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
+<refentry id="systemd-volatile-root.service">
+
+  <refentryinfo>
+    <title>systemd-volatile-root.service</title>
+    <productname>systemd</productname>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>systemd-volatile-root.service</refentrytitle>
+    <manvolnum>8</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>systemd-volatile-root.service</refname>
+    <refname>systemd-volatile-root</refname>
+    <refpurpose>Make the root file system volatile</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <para><filename>systemd-volatile-root.service</filename></para>
+    <para><filename>/usr/lib/systemd/systemd-volatile-root</filename></para>
+  </refsynopsisdiv>
+
+  <refsect1>
+    <title>Description</title>
+
+    <para><filename>systemd-volatile-root.service</filename> is a service that replaces the root directory with a
+    volatile memory file system (<literal>tmpfs</literal>), mounting the original (non-volatile)
+    <filename>/usr/</filename> inside it read-only. This way, vendor data from <filename>/usr/</filename> is available as
+    usual, but all configuration data in <filename>/etc/</filename>, all state data in <filename>/var/</filename> and all
+    other resources stored directly under the root directory are reset on boot and lost at shutdown, enabling fully
+    stateless systems.</para>
+
+    <para>This service is only enabled if full volatile mode is selected, for example by specifying
+    <literal>systemd.volatile=yes</literal> on the kernel command line. This service runs only in the initrd,
+    before the system transitions to the host's root directory. Note that this service is not used if
+    <literal>systemd.volatile=state</literal> is used, as in that mode the root directory is non-volatile.
+    </para>
+  </refsect1>
+
+  <refsect1>
+    <title>See Also</title>
+    <para>
+      <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>kernel-command-line</refentrytitle><manvolnum>7</manvolnum></citerefentry>
+    </para>
+  </refsect1>
+
+</refentry>