libvirt has too many gotchas to be as easy to use as virtualbox, vmware or proxmox. Proxmox also uses qemu+kvm, but is opinionated enough to pick the most appro

libvirt has too many gotchas to be as easy to use as virtualbox, vmware or proxmox. Proxmox also uses qemu+kvm, but is opinionated enough to pick the most appropriate option by default. Example? For Networking, you probably want the virtio driver for maximum throughput if it is supported on the guest (even Windows has drivers now), using the emulated realtek device/e1000 is very slow. That means you should probably also use the virtio block devices, right? Nope, wrong, work on that was abandoned years ago, use SATA!