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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 2013 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-gpt-auto-generator">
<refentryinfo>
<title>systemd-gpt-auto-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-gpt-auto-generator</refentrytitle>
<manvolnum>8</manvolnum>
</refmeta>
<refnamediv>
<refname>systemd-gpt-auto-generator</refname>
<refpurpose>Generator for automatically discovering
and mounting <filename>/home</filename> and <filename>/srv</filename>, as well as
discovering and enabling swap partitions, based on GPT
partition type GUIDs.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<para><filename>/usr/lib/systemd/system-generators/systemd-gpt-auto-generator</filename></para>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><filename>systemd-gpt-auto-generator</filename>
is a unit generator that automatically discovers
<filename>/home</filename>, <filename>/srv</filename>
and swap partitions and creates mount and swap units
for them, based on the the partition type GUIDs of
GUID partition tables (GPT). Note that this generator
has no effect on non-GPT systems, on systems where the
units are explicitly configured (for example, listed
in
<citerefentry><refentrytitle>fstab</refentrytitle><manvolnum>5</manvolnum></citerefentry>),
or where the mount points are non-empty.</para>
<para>This generator will only look for partitions on
the same physical disk the root file system is stored
on. This generator has no effect on systems where the
root file system is distributed on multiple disks, for
example via btrfs RAID.</para>
<para><filename>systemd-gpt-auto-generator</filename>
is useful for centralizing file system configuration
in the partition table and making manual configuration
in <filename>/etc/fstab</filename> or suchlike
unnecessary.</para>
<para>This generator looks for the partitions based on
their partition type GUID. The following partition
type GUIDs are identified:</para>
<table>
<title>Partition Type GUIDs</title>
<tgroup cols='3' align='left' colsep='1' rowsep='1'>
<colspec colname="guid" />
<colspec colname="location" />
<colspec colname="explanation" />
<thead>
<row>
<entry>Partition Type GUID</entry>
<entry>Location</entry>
<entry>Explanation</entry>
</row>
</thead>
<tbody>
<row>
<entry>0657fd6d-a4ab-43c4-84e50933c84b4f4f</entry>
<entry>Swap</entry>
<entry>All swap partitions are enabled.</entry>
</row>
<row>
<entry>933ac7e1-2eb4-4f13-b8440e14e2aef915</entry>
<entry><filename>/home</filename></entry>
<entry>The first home partition on the disk is mounted to <filename>/home</filename>.</entry>
</row>
<row>
<entry>3b8f8425-20e0-4f3b-907f1a25a76f98e8</entry>
<entry><filename>/srv</filename></entry>
<entry>The first server data partition on the disk is mounted to <filename>/srv</filename>.</entry>
</row>
</tbody>
</tgroup>
</table>
<para>The <filename>/home</filename> and
<filename>/srv</filename> partitions may be encrypted
in LUKS format. In this case a device mapper device is
set up under the names
<filename>/dev/mapper/home</filename> and
<filename>/dev/mapper/srv</filename>. Note that this
might create conflicts if the same partition is listed
in <filename>/etc/crypttab</filename> with a different
device mapper device name.</para>
<para>Also note that
<citerefentry><refentrytitle>systemd-efi-boot-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>
will mount the EFI System Partition to
<filename>/boot</filename> is not otherwise mounted.</para>
<para><filename>systemd-gpt-auto-generator</filename>
implements the <ulink
url="http://www.freedesktop.org/wiki/Software/systemd/Generators">generator
specification</ulink>.</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.swap</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-efi-boot-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-cryptsetup@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>cryptsetup</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>fstab</refentrytitle><manvolnum>5</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>
|
