The error seems to come from this line:
self._driver = _FileStorageDriver(str(path_driver_uri.root)) (line #353 in clearml/storage/helper.py
Where if the path_driver is a local path, then the _FileStorageDriver starts with a base_path = '/' , and then takes extremely long time at iterating over the entire file system (e.g. in _get_objects , line #1931 in helper.py )