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<H1>[Mageia-dev] Freeze Push: e2fsprogs</H1>
<B>Anssi Hannula</B>
<A HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20Freeze%20Push%3A%20e2fsprogs&In-Reply-To=%3C4FA562AB.5080608%40mageia.org%3E"
TITLE="[Mageia-dev] Freeze Push: e2fsprogs">anssi at mageia.org
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<I>Sat May 5 19:26:03 CEST 2012</I>
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<PRE>05.05.2012 19:42, Colin Guthrie kirjoitti:
><i> 'Twas brillig, and David Walser at 05/05/12 17:15 did gyre and gimble:
</I>>><i> Colin Guthrie wrote:
</I>>>><i> This is why the kernel will automatically does the sync for you every 12
</I>>>><i> minutes when an ntp daemon is running. This is the recommended method.
</I>>><i>
</I>>><i> How does the kernel know when an ntp daemon is running in user space? Does it work with chrony, or only ntpd?
</I>><i>
</I>><i> I don't know the internals. It works with either chrony or ntpd.
</I>><i>
</I>>>><i> So unless we have a proper frame of reference, (user set time, ntp
</I>>>><i> protocol time) then there should be no manual sync.
</I>>><i>
</I>>><i> Does the kernel then sync the hwclock when you change the time manually, including with rdate or ntpdate?
</I>><i>
</I>><i> It won't do it automatically when doing that. It's really up to whatever
</I>><i> tool changes the date/time to do that as needed I think.
</I>
And how could such a tool know if RTC should be set to UTC or local time?
.. or are we expected to patch them to parse /etc/sysconfig/clock for that?
Well, I guess the tool could detect that by looking at the RTC/sysclock
offset as well, though seems a bit hacky...
What is the expected "right way" to do it, if systemd policy is to not
sync on shutdown?
--
Anssi Hannula
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