Hi! > > I'm running a virtualized environment with xen. Nothing big. One > machine, one Windows guest and ~3 linux guests... > > > Now, in xen 4.1 wallclock was removed (because it seems to have caused > problems anyway). Not beeing aware of that fact I was one day > wondering about the time offsets on the guests (the Dom0 was running > on ntp anyway). > > The only solution to reliably synchronize times on virtual machines on > the same host now seems to be to run ntp. No big issue!
Slightly off-topic, but you should set echo xen > \ /sys/devices/system/clocksource/clocksource0/current_clocksource as clocksource for your Xen >= 4.1 domU. From now on, you shouldn't need ntpd's running inside your domU. Just sync your dom0. btw. Take a look in /sys/devices/system/clocksource/clocksource0/available_clocksource to see all available sources. cheers, - Stephan
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