[opensuse] Re: chrony and hwclock
Roger Oberholtzer wrote:
Can I be sure ntp knows that my 2 hour time difference on the hardware clock is correct and not an error? Remember that the hardware clock is UTC time.
As Carlos explained, ntp doesn't know anything about hardware clock. The CMOS hardware clock's clock, time is transferred by boot.clock to the system hardware clock. ntpd only works with the system hardware clock, not with the battery-buffered CMOS hardware clock.
And we do not all live in that timezone.
Per and I are from Europe as well, and it works at our installations. Joachim -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Joachim Schrod Email: jschrod@acm.org Roedermark, Germany -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Tue, 2011-07-19 at 11:09 +0200, Joachim Schrod wrote:
Roger Oberholtzer wrote:
Can I be sure ntp knows that my 2 hour time difference on the hardware clock is correct and not an error? Remember that the hardware clock is UTC time.
As Carlos explained, ntp doesn't know anything about hardware clock. The CMOS hardware clock's clock, time is transferred by boot.clock to the system hardware clock. ntpd only works with the system hardware clock, not with the battery-buffered CMOS hardware clock.
And we do not all live in that timezone.
Per and I are from Europe as well, and it works at our installations.
It also works for all my systems that are permanently attached to the network where the time server lives. My issue is with system where that is not the case. Yours sincerely, Roger Oberholtzer OPQ Systems / Ramböll RST Office: Int +46 10-615 60 20 Mobile: Int +46 70-815 1696 roger.oberholtzer@ramboll.se ________________________________________ Ramböll Sverige AB Krukmakargatan 21 P.O. Box 17009 SE-104 62 Stockholm, Sweden www.rambollrst.se -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Roger Oberholtzer wrote:
On Tue, 2011-07-19 at 11:09 +0200, Joachim Schrod wrote:
Roger Oberholtzer wrote:
Can I be sure ntp knows that my 2 hour time difference on the hardware clock is correct and not an error? Remember that the hardware clock is UTC time.
As Carlos explained, ntp doesn't know anything about hardware clock. The CMOS hardware clock's clock, time is transferred by boot.clock to the system hardware clock. ntpd only works with the system hardware clock, not with the battery-buffered CMOS hardware clock.
And we do not all live in that timezone.
Per and I are from Europe as well, and it works at our installations.
It also works for all my systems that are permanently attached to the network where the time server lives. My issue is with system where that is not the case.
Are you sure? If you have the same error on the other systems, that error will get corrected at start of ntpd immediately. You might not notice the erroneous initial setting. If the syslog timestamps are correct directly before ntpd starts, then its a safe assumption to say so, though. :-) Joachim -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Joachim Schrod Email: jschrod@acm.org Roedermark, Germany -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
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Joachim Schrod -
Roger Oberholtzer