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From Indra Pramana <>
Subject Wrong timing when a Windows VM boots-up
Date Mon, 30 Jun 2014 05:07:54 GMT
Dear all,

We are using CloudStack 4.2.0 and KVM hypervisor. We are based in
Singapore, GMT +0800.

Recently we had some issues whenever a Windows-based guest VM under
CloudStack is being restarted, the time will move behind by 8 hours. For
example, if a VM was rebooted at 8am Singapore time, after reboot the clock
will show 12am Singapore time, which is the GMT equivalent. However, the
time zone is correctly stated as Singapore time, causing the whole system
clock to be 8 hour behind upon reboot and will stay that way until we
manually modify the time or synchronise with the Windows Internet time

This issue may be related but it's for XenServer though. I am using KVM:

Anyone knows how to fix the problem? The issue seems to be only affecting
Windows guests (both Windows servers 2008 and 2012) and do not affect Unix

Looking forward to your reply, thank you.


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