<?xml version='1.0'?> <!--*-nxml-*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+<!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+
-
- This file is part of systemd.
-
- Copyright 2010 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/>.
--->
+<!-- SPDX-License-Identifier: LGPL-2.1+ -->
<refentry id="machine-id">
<refentryinfo>
<title>machine-id</title>
<productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Lennart</firstname>
- <surname>Poettering</surname>
- <email>lennart@poettering.net</email>
- </author>
- </authorgroup>
</refentryinfo>
<refmeta>
<para>The machine ID may be set, for example when network booting, with the
<varname>systemd.machine_id=</varname> kernel command line parameter or by passing the
- option <option>--machine-id=</option> to systemd. An ID is specified in this manner
+ option <option>--machine-id=</option> to systemd. An ID specified in this manner
has higher priority and will be used instead of the ID stored in
<filename>/etc/machine-id</filename>.</para>
<title>Initialization</title>
<para>Each machine should have a non-empty ID in normal operation. The ID of each
- machine should be unique. To achive those objectives,
+ machine should be unique. To achieve those objectives,
<filename>/etc/machine-id</filename> can be initialized in a few different ways.
</para>
to be bind-mounted over the real file, in case the image is used read-only.</para>
<para><citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
- may be used to to initialize <filename>/etc/machine-id</filename> on mounted (but not
+ may be used to initialize <filename>/etc/machine-id</filename> on mounted (but not
booted) system images.</para>
<para>When a machine is booted with
be used. If this file is empty or missing, <filename>systemd</filename> will attempt
to use the D-Bus machine ID from <filename>/var/lib/dbus/machine-id</filename>, the
value of the kernel command line option <varname>container_uuid</varname>, the KVM DMI
- <filename>product_uuid</filename> (on KVM systems), and finally a randomly generated
- UUID.</para>
+ <filename>product_uuid</filename> or the devicetree <filename>vm,uuid</filename>
+ (on KVM systems), and finally a randomly generated UUID.</para>
<para>After the machine ID is established,
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>