Hi, I posted this thread a week ago under ovirt users: https://lists.ovirt.org/archives/list/users@ovirt.org/thread/EJH2X5X5FDIR... Maybe I posted on the wrong list. Anyway, I didn't get any answer yet. Hope you can help me here. In short, I have a VM under Cluster Affinity label. And need to cold migrate this VM to another host. For that, I'm doing this (Via Python REST API): * Stop the VM. * Remove its Affinity label. * Update its host to the target host. * Start the VM. But the result is that the VM is always keep starting on its current host. For updating the VM host, I used few ways as: vm_service.update( types.Vm( host=types.Host( id=host_id ), ) ) Or: vm_service.update( types.Vm( host=types.Host( name=host_name ), ) ) Then started the VM using: vm_service.start() or using: vm_service.start( vm=types.Vm( host=types.Host( name=host_name ), ) ) vm_service.start( vm=types.Vm( host=types.Host( id=host_id ), ) ) I get no errors, but VM keeps starting on the current host and not on the new target host. BTW - in case it would start on the target host, the plan is to add affinity label back just after. Thanks, Lavi Buchnik Cloud System Engineer T: +972-2-6499352 M: +972-52-8542307 Lavi.Buchnik(a)exlibrisgroup.com [cid:image002.jpg@01D710F9.A61823E0] www.exlibrisgroup.com<http://www.exlibrisgroup.com/>