Test farm news

Gary E. Miller gem at rellim.com
Tue Jun 14 18:17:12 UTC 2016

Yo Achim!

On Tue, 14 Jun 2016 09:04:40 +0200
Achim Gratz <Stromeko at nexgo.de> wrote:

> Gary E. Miller writes:
> > You need to do more than shutdown ntpd to get back to pre-ntp
> > initial conditions.  For a real good test you need to set the
> > system clock off by maybe a minute, or an hour ,or maybe back to
> > 1970.  Remove the drift file.  Remove the battery from you GPS.
> > And probably restart Linux to clera out any save drift.  
> On the raspberries the clock is out by whatever time it needs to
> reboot when you start ntpd unless you have an extra RTC attached or
> take care to set the clock to something almost sane via ntpdate
> before starting the daemon.

Or worse, if you power down, reset to 1970.  Hopefully at some time
during boot the OS will apply some sanity check to the RTC.  Chronyd
takes the time stamp of the drift file on restart and if the system time
is before the drift file time it resets the system time to the drift
file time.

Simple, but it helps a lot.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at rellim.com  Tel:+1 541 382 8588
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