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hibernate-resume: add a tool to write a device node's major:minor to /sys/power/resume.
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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 <!--
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7 Copyright 2014 Ivan Shapovalov
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9 systemd is free software; you can redistribute it and/or modify it
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22 <refentry id="systemd-hibernate-resume@.service">
23
24 <refentryinfo>
25 <title>systemd-hibernate-resume@.service</title>
26 <productname>systemd</productname>
27
28 <authorgroup>
29 <author>
30 <contrib>Developer</contrib>
31 <firstname>Ivan</firstname>
32 <surname>Shapovalov</surname>
33 <email>intelfx100@gmail.com</email>
34 </author>
35 </authorgroup>
36 </refentryinfo>
37
38 <refmeta>
39 <refentrytitle>systemd-hibernate-resume@.service</refentrytitle>
40 <manvolnum>8</manvolnum>
41 </refmeta>
42
43 <refnamediv>
44 <refname>systemd-hibernate-resume@.service</refname>
45 <refname>systemd-hibernate-resume</refname>
46 <refpurpose>Resume from hibernation</refpurpose>
47 </refnamediv>
48
49 <refsynopsisdiv>
50 <para><filename>systemd-hibernate-resume@.service</filename></para>
51 <para><filename>/usr/lib/systemd/systemd-hibernate-resume</filename></para>
52 </refsynopsisdiv>
53
54 <refsect1>
55 <title>Description</title>
56
57 <para><filename>systemd-hibernate-resume@.service</filename> is a
58 service that initiates hibernation resume from a device
59 containing the resume image. It is instantiated for each
60 device that is configured for resuming from.</para>
61
62 <para><filename>systemd-hibernate-resume</filename> only supports
63 the in-kernel hibernation implementation, known as swsusp.
64 Internally, it works by writing the major:minor of specified
65 device node to <filename>/sys/power/resume</filename>.</para>
66
67 <para>Failing to initiate a resume is not an error condition.
68 It may mean that there was no resume image (e. g. if the
69 system has been simply powered off and not hibernated). In
70 such case, the boot is ordinarily continued.</para>
71 </refsect1>
72
73 <refsect1>
74 <title>See Also</title>
75 <para>
76 <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
77 <citerefentry><refentrytitle>systemd-hibernate-resume-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>
78 </para>
79 </refsect1>
80
81 </refentry>