1 <?xml version='1.0'?> <!--*-nxml-*-->
2 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
3 "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
6 SPDX-License-Identifier: LGPL-2.1+
8 This file is part of elogind.
10 Copyright 2018 Peter A. Bigot
13 <refentry id="elogind-time-wait-sync.service" conditional='ENABLE_TIMESYNCD'>
16 <title>elogind-time-wait-sync.service</title>
17 <productname>elogind</productname>
21 <contrib>Developer</contrib>
22 <firstname>Peter</firstname>
23 <surname>Bigot</surname>
24 <email>pab@pabigot.com</email>
30 <refentrytitle>elogind-time-wait-sync.service</refentrytitle>
31 <manvolnum>8</manvolnum>
35 <refname>elogind-time-wait-sync.service</refname>
36 <refname>elogind-time-wait-sync</refname>
37 <refpurpose>Wait Until Kernel Time Synchronized</refpurpose>
41 <para><filename>elogind-time-wait-sync.service</filename></para>
42 <para><filename>/usr/lib/elogind/elogind-time-wait-sync</filename></para>
46 <title>Description</title>
48 <para><filename>elogind-time-wait-sync</filename> is a system service that delays the start of units that depend on
49 <filename>time-sync.target</filename> until the system time has been synchronized with an accurate time source by
50 <filename>elogind-timesyncd.service</filename>.</para>
52 <para><filename>elogind-timesyncd.service</filename> notifies on successful synchronization.
53 <filename>elogind-time-wait-sync</filename> also tries to detect when the kernel marks the time as synchronized,
54 but this detection is not reliable and is intended only as a fallback for other servies that can be used to
55 synchronize time (e.g., ntpd, chronyd).</para>
64 <term><filename>/run/systemd/timesync/synchronized</filename></term>
67 <para>The presence of this file indicates to this service that the system clock has been synchronized.</para>
76 <title>See Also</title>
78 <citerefentry><refentrytitle>elogind</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
79 <citerefentry><refentrytitle>elogind.special</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
80 <citerefentry><refentrytitle>elogind-timesyncd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,