instant-workstation/backend/disks/disk_utils.py

import pathlib
import shutil
import subprocess
import tempfile

def create_os_disk(paths):
    with tempfile.TemporaryDirectory(dir=paths.target_path.parent) as temporary_directory:
        temporary_path = pathlib.Path(temporary_directory) / 'disk.qcow2'

        subprocess.run(
            args=[
                'qemu-img', 'create',
                '--format', 'qcow2',
                '--backing', paths.template_path,
                '--backing-format', 'qcow2',
                temporary_path
            ],
            check=True,
            timeout=10
        )

        temporary_path.replace(paths.target_path)

def create_nvram_disk(paths):
    with tempfile.TemporaryDirectory(dir=paths.nvram_target_path.parent) as temporary_directory:
        temporary_path = pathlib.Path(temporary_directory) / 'NVRAM.img'

        shutil.copyfile(paths.nvram_path, temporary_path)
        
        temporary_path.replace(paths.nvram_target_path)