Hi, i have atwo node HA-cluster with pacemaker, corosync, libvirt and KVM. Recently i configured a new VirtualDomain which runs fine, but live Migration does not succeed. This is the error: VirtualDomain(vm_snipanalysis)[14322]: 2019/09/18_16:56:54 ERROR: snipanalysis: live migration to ha-idg-2 failed: 1 Sep 18 16:56:54 [6970] ha-idg-1 lrmd: notice: operation_finished: vm_snipanalysis_migrate_to_0:14322:stderr [ error: operation failed: guest CPU doesn't match specification: missing features: fma,movbe,xsave,avx,f16c,rdrand,fsgsbase,bmi1,avx2,smep,bmi2,erms,invpcid,md-clear,xsaveopt,abm ] The two servers are from HP, they are similar, but not identical. Their CPU's are different: One is "Intel(R) Xeon(R) CPU E5-2630 v3 @ 2.40GHz", following /proc/cpuinfo, the other is "Intel(R) Xeon(R) CPU X5675 @ 3.07GHz". Which guest CPU should i choose for having the guest running smoothly on each host ? Bernd -- Bernd Lentes Systemadministration Institut für Entwicklungsgenetik Gebäude 35.34 - Raum 208 HelmholtzZentrum münchen bernd.lentes(a)helmholtz-muenchen.de phone: +49 89 3187 1241 phone: +49 89 3187 3827 fax: +49 89 3187 2294 http://www.helmholtz-muenchen.de/idg Perfekt ist wer keine Fehler macht Also sind Tote perfekt Helmholtz Zentrum Muenchen Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH) Ingolstaedter Landstr. 1 85764 Neuherberg www.helmholtz-muenchen.de Aufsichtsratsvorsitzende: MinDir'in Prof. Dr. Veronika von Messling Geschaeftsfuehrung: Prof. Dr. med. Dr. h.c. Matthias Tschoep, Kerstin Guenther Registergericht: Amtsgericht Muenchen HRB 6466 USt-IdNr: DE 129521671