#!/usr/bin/python3

import btrfs
import sys

if len(sys.argv) < 2:
    print("Usage: {} <mountpoint>".format(sys.argv[0]))
    sys.exit(1)

with btrfs.FileSystem(sys.argv[1]) as fs:
    for device in fs.devices():
        print(device.key)
    for chunk in fs.chunks():
        print(chunk.key)