def get_disk_size_gb()

in selftest/selftest.py [0:0]

• 19 lines of code
• 3 McCabe index (conditional complexity)

def get_disk_size_gb(disk_path: str) -> int:
    """Get the size of the disk in GB."""
    try:
        proc = subprocess.run(
            ["lsblk", "-b", "-n", "-o", "SIZE", "-d", disk_path],
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
            text=True,
            check=True,
        )
        logger.debug("lsblk output: %r", proc)
        size_bytes = int(proc.stdout.strip())
        size_gib = size_bytes // (1000**3)
        return size_gib
    except subprocess.CalledProcessError as error:
        logger.error("error while fetching disk size: %r", error)
        raise
    except FileNotFoundError:
        logger.error("lsblk command not found")
        raise