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authorLennart Poettering <lennart@poettering.net>2010-07-02 03:51:29 +0200
committerLennart Poettering <lennart@poettering.net>2010-07-02 03:51:29 +0200
commitb2c20dd9583eb50e03dfb684ef15e018becc887b (patch)
tree333f1dcf5230d22ac7e6d14c75718c52b3262467 /man/systemd.snapshot.xml
parent6759e7a7638fc98877f98a7d45b265461ea78674 (diff)
man: document snapshot units
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+<?xml version='1.0'?> <!--*-nxml-*-->
+<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
+<!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 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+-->
+
+<refentry id="systemd.snapshot">
+ <refentryinfo>
+ <title>systemd.snapshot</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.snapshot</refentrytitle>
+ <manvolnum>5</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>systemd.snapshot</refname>
+ <refpurpose>systemd snapshot units</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <para><filename>systemd.snapshot</filename></para>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>Snapshot units are not configured via unit
+ configuration files. Nonetheless they are named
+ similar to filenames. A unit name whose name ends in
+ <filename>.snapshot</filename> refers to a dynamic
+ snapshot of the systemd runtime state.</para>
+
+ <para>Snapshots are not configured on disk but created
+ dynamically via <command>systemctl snapshot</command>
+ (see
+ <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ for details) or an equivalent command. When created
+ they will automatically get dependencies on the
+ currently activated units. They hence act as saved
+ runtime state of the systemd manager. Later on the
+ user may choose to return to the saved state via
+ <command>systemctl isolate</command>. They are hence
+ useful to roll back to a defined state after
+ temporarily starting/stopping services or
+ similar.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ </para>
+ </refsect1>
+
+</refentry>