import sys, os

path = sys.argv[1]
names = os.listdir(path)
dev = os.lstat(path).st_dev
for name in names:
    entry_path = os.path.join(path, name)
    entry_dev = os.lstat(entry_path).st_dev
    if entry_dev != dev:
        print("%s st_dev is different: %s vs %s" % (entry_path, entry_dev, dev))