| Problem | Solution | |---------|----------| | VM fails to boot (no console) | Ensure QEMU package includes qemu-system-x86_64 . Use virt-viewer instead of serial console. | | Network interfaces not detected | Add model type='virtio' and ensure guest supports VirtIO (FortiOS does). | | Low throughput | Enable multiqueue: driver queues='N' where N = number of vCPUs. | | License invalid | Check system time: execute date and sync NTP: config system ntp . | | QCOW2 corruption | Use qemu-img check -r all fortios.qcow2 |
Enable multi-queue in KVM and assign more vCPUs to the VM. Also, check that hardware offloading (if available) is enabled in the FortiGate CLI: fgtvm64kvmv723fbuild1262fortinetoutkvmqcow2 new
qemu-img info fgtvm64-kvm-v723-fbuild1262.qcow2 | Problem | Solution | |---------|----------| | VM