copyparty failed to add the following files to the archive:

 file: 'volumes/backingFsBlockDev'
error: [PermissionError] [Errno 1] Operation not permitted: b'/mnt/pelican/docker/volumes/backingFsBlockDev'
-- util.py:3145 <yieldfile>: with open(fsenc(fn), "rb", bufsz) as f:
-- szip.py:201 <ser>: for buf in yieldfile(src, self.args.iobuf):
-- szip.py:236 <gen>: for x in self.ser(f):

NOTE: filepaths sanitized; see serverlog for correct values