[Duplicity-talk] ReadError: unexpected end of data

[Adam M.]

Hi,

I've been using duplicty (0.6.something and now 0.7.07.1 with python  
2.7.12) via duply.
After one full and several incremental backups, all successful, it  
suddenly stopped working with a "ReadError: unexpected end of data".
I now get this error every time.

The end of a run with verbosity=9 looks like:
---------------------------------------------------------------------------------------------------
[...]

Selection: examining path /path/profile_name/XXX/XXX/XXX.XXX
Selection:     result: None from function: Command-line exclude glob: /YYY/YYY
Selection:     + including file
Selecting /path/profile_name/XXX/XXX/XXX.XXX


Releasing lockfile /XXX/XXX/lockfile.lock
Removing still remembered temporary file /tmp/XXX/XXX
Removing still remembered temporary file /tmp/YYY/YYY

Traceback (most recent call last):
  File "/usr/bin/duplicity", line 1544, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 1538, in with_tempdir
    fn()
  File "/usr/bin/duplicity", line 1392, in main
    do_backup(action)
  File "/usr/bin/duplicity", line 1520, in do_backup
    incremental_backup(sig_chain)
  File "/usr/bin/duplicity", line 674, in incremental_backup
    globals.backend)
  File "/usr/bin/duplicity", line 437, in write_multivol
    at_end = gpg.GPGWriteFile(tarblock_iter, tdp.name,  
globals.gpg_profile, globals.volsize)
  File "/usr/lib/python2.7/dist-packages/duplicity/gpg.py", line 340,  
in GPGWriteFile
    data = block_iter.next().data
  File "/usr/lib/python2.7/dist-packages/duplicity/diffdir.py", line  
523, in next
    result = self.process(self.input_iter.next())
  File "/usr/lib/python2.7/dist-packages/duplicity/diffdir.py", line  
195, in get_delta_iter
    for new_path, sig_path in collated:
  File "/usr/lib/python2.7/dist-packages/duplicity/diffdir.py", line  
286, in collate2iters
    relem2 = riter2.next()
  File "/usr/lib/python2.7/dist-packages/duplicity/diffdir.py", line  
354, in combine_path_iters
    refresh_triple_list(triple_list)
  File "/usr/lib/python2.7/dist-packages/duplicity/diffdir.py", line  
341, in refresh_triple_list
    new_triple = get_triple(old_triple[1])
  File "/usr/lib/python2.7/dist-packages/duplicity/diffdir.py", line  
327, in get_triple
    path = path_iter_list[iter_index].next()
  File "/usr/lib/python2.7/dist-packages/duplicity/diffdir.py", line  
239, in sigtar2path_iter
    for tarinfo in tf:
  File "/usr/lib/python2.7/tarfile.py", line 2508, in next
    tarinfo = self.tarfile.next()
  File "/usr/lib/python2.7/tarfile.py", line 2350, in next
    raise ReadError("unexpected end of data")
ReadError: unexpected end of data
---------------------------------------------------------------------------------------------------

What does this actually mean? What could I try to fix the problem or  
at least figure out what is wrong?


Best regards,

--
A.