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KVM guest time shift on host reboot

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linux-howto

http://serverfault.com – I have installed Ubuntu server 12.04 as a KVM host, and created an Ubuntu guest that is also running Ubuntu server 12.04. The servers are in the AST time zone which is UTC + 3 hours. After setting the time correctly in the guests using date -s I am able to reboot the guests as much as I like with the correct time being retained between reboots. If however the KVM host is rebooted (the host has no time issues between reboots), then once I start my KVM guests all of them are exactly 3 hours behind the correct time. The output below shows the system time and hardware clock time on the host and g (HowTos)