Re: [Xen-users] Time change conundrum

[Florian Heigl <florian.heigl@xxxxxxxxx>]

Does the very short answer
"the domU time is calculated from a counter that is based of the dom0
uptime measured in nanoseconds - unless the domU is using
clocksource=jiffies" make it clearer?

Actually I'm not sure I got it 100% right on a technical point of view
now (tired, zzzzz), but the basic meaning is right:
You might be seeing a corner case where nothing but a dom0 reboot would help.
But I think you can also change the domU clock source at run-time, so
that might be preferrable right now.

My "datacenter" also didn't set the system clocks to UTC after some
maintenance. I resorted to a 2hour-downtime for the database boxes.
Not great. Time for yet another nagios check ;)

Florian

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