Le 03/08/2014 21:45, Itamar Heim a écrit :
(assuming not relevant, but for next person googling...)
Clever attitude. Thanks.
live migration of VMs may fail / misbehave in such a case. we do not currently check the original cpu level to compare it during live migration.
Strange, because here is what I noticed : - Eventually, I lowered the cluster CPU level from SandyBridge to Westmere - I tried to migrate the VMs that were still running since the sandybridge time. When destination choosing the sandybridge hosts, it worked. When choosing the westmere hosts, it failed. - I had to shutdown the VMs, then bring them back. Since then, I can migrate them anywhere. To me this looks perfectly clear and sound - this deals with available CPU features (and instructions passthrough I guess). -- Nicolas Ecarnot