创建镜像
qemu-img create -f qcow2 test-vm.qcow2 10g
修改镜像大小
qemu-img resize test-vm.qcow2 +10G
安装系统 qemu-system-x86_64 -m 2048 -enable-kvm test-vm.qcow2 -cdrom ~/Downloads/Fedora-Workstation-Live-x86_64-30-1.2.iso 启动系统 qemu-system-x86_64 -m 4096 -enable-kvm test-vm.qcow2 -k en-us