----- On Feb 14, 2020, at 4:13 PM, Peter Krempa pkrempa@xxxxxxxxxx wrote: > > Sounds like qemu doesn't support unplug of vcpus. Which version of qemu > do you use? ha-idg-2:~ # rpm -qa|grep qemu qemu-seabios-1.11.0-5.18.1.noarch qemu-ovmf-x86_64-2017+git1510945757.b2662641d5-3.16.1.noarch qemu-block-curl-2.11.2-5.18.1.x86_64 qemu-sgabios-8-5.18.1.noarch qemu-x86-2.11.2-5.18.1.x86_64 libvirt-daemon-qemu-4.0.0-8.15.2.x86_64 qemu-ipxe-1.0.0+-5.18.1.noarch qemu-tools-2.11.2-5.18.1.x86_64 qemu-vgabios-1.11.0-5.18.1.noarch qemu-block-ssh-2.11.2-5.18.1.x86_64 qemu-kvm-2.11.2-5.18.1.x86_64 qemu-2.11.2-5.18.1.x86_64 libvirt-daemon-driver-qemu-4.0.0-8.15.2.x86_64 qemu-block-rbd-2.11.2-5.18.1.x86_64 I found a table on https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html/virtual_machine_management_guide/cpu_hot_plug saying that hotplugging is possible but no hotunplugging. But i don't know how recent this information is and if RedHat uses libvirt/qemu. Bernd Helmholtz Zentrum München 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
