Am 25.03.2016 um 06:52 schrieb Tim Streit: > Im having problems with my install. Debian Jessie (8.3), but using libvirt > and kernel from back ports (for enhanced vt-d support, passing through a USB > card). Guest is a windows xp sp3 box. Initially I had hardware time set to > UTC, and I set the RealTimeIsUtc=1 in the registry. But it would > periodically reset itself ahead 6 hours (CST), and since we just changed day > light savings time now its jumping 5 hours. Every morning. I have a > similarly configured system running a win7 guest, time works fine. > > Someone on #kvm suggested that maybe I need to set my hwclock to local time, > and so I went through all that - changed it, appended LOCAL to /etc/adjtime > etc. I then changed the RealTimeIsUtc=0, and for the first boot it seemed > okay. > > Now, whenever I boot, it is constantly 5 hours ahead. I can reset it but > when you reboot, its back.
Tell libvirt to give your VM a RTC with <clock offset='variable' basis='utc' adjustment='-18000'/> That way your VM will have a RTC 5h behind UTC and Windows is free to adjust the offset as it likes when the day-light saving occurs. When that happens the "adjustment" changes and libvirt will persist that in the XML. See <https://libvirt.org/formatdomain.html#elementsTime>. Philipp -- libvir-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/libvir-list
