manual qemu command

qemu-system-x86_64 -enable-kvm -drive file=/usr/share/OVMF/OVMF_CODE.fd,if=pflash,format=raw,unit=0,readonly=on -smp sockets=1,cpus=4,cores=2 -cpu host -m 1024 -vga none -nographic -drive file=/scratch/IMG/clearlinux/clear-18730-cloud.raw,if=virtio,aio=threads,format=raw -netdev user,id=mynet0,hostfwd=tcp::10022-:22,hostfwd=tcp::12375-:2375 -device virtio-net-pci,netdev=mynet0 -debugcon file:debug.log -global isa-debugcon.iobase=0x402