On 02/16/2018 08:37 AM, Volo M. wrote: > Hello techs, > > We used XL toolkit for Xen hypervisor for starting Windows hvm VMs and > the option rtc_timeoffset worked perfectly with XL. It helped us to set > correct Timezone time/offset for Windows HVM VMs from inside > virtual_machine xen config. > > For example: > Below option WORKS perfectly with XL toolkit. > [root@hw12xen ~]# cat goillltawdlssq.xl.cfg | grep offset > rtc_timeoffset = "7200" # +2 hours to UTC time (or +/-3600=+/-1 hour to > UTC time) > [root@hw12xen ~]# > > Now we try to migrate all the Windows hvm VMs to using Libvirt and Xen > 4.6.6 (or 4.4). > But as we see it's impossible to make VMs using correct time/offset set > in XML config like below: > > below Libvirt option DOESN'T WORK as we expect... > [root@hw12xen ~]# cat goillltawdlssq.var.xml | grep offset > <clock offset='variable' adjustment='7200' /> > [root@hw12xen ~]# > > Can you please explain if there's something we're doing wrong way or it's > just a bug like described here: > https://bugzilla.redhat.com/show_bug.cgi?id=1212191 ? > No, you're not doing anything wrong. And yes, you've hit that bug, although I'd prefer to call it an enhancement request. Xen's rtc_timeoffset setting is currently not supported by the libvirt libxl driver. Regards, Jim