[ovirt-users] VM can't start: Unknown CPU-Model

Hi, we see here a confusing problem. A college reboots/shutdown his VMs for maintenance. After that he starts the VMs (~20), but one of them throws following error: All nodes of the clusters are reporting: And the cluster is configured with: My quick fix for the vm was, that I used a specific (not the cluster default) CPU-Model without the spectre/meltdown mitigation: I've also tried to select manually "SandyBridge,+spec-ctrl". But when I do this the wizard blocks and surround the field with a red border (see picture in the attachment). Any idea? Greeting Tobias