backup failed after moving backup location

[Api]

How to reproduce:
- full backup to a remote SSH location A
- then move the remote backup location to B and update the local cache files accordingly, so that dejadup continues with incremental backups wrt the previous full backup
I followed this guide http://blog.linux2go.dk/2011/01/20/moving-duplicity-and-hence-deja-dup-backups/
- then run dejadup again: you expect an incremental backup to location B, instead you get the following error
- as a side effect, DD deletes all local cache files, even those of other duplicity backups

Ubuntu 12.04.1 LTS 64 bit
deja-dup 22.0-0ubuntu2
duplicity 0.6.19-0ubuntu0ppa18~precise1

Traceback (most recent call last):
  File "/usr/bin/duplicity", line 1391, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 1384, in with_tempdir
    fn()
  File "/usr/bin/duplicity", line 1264, in main
    globals.archive_dir).set_values()
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 696, in set_values
    self.get_backup_chains(partials + backend_filename_list)
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 819, in get_backup_chains
    map(add_to_sets, filename_list)
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 809, in add_to_sets
    if set.add_filename(filename):
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 97, in add_filename
    (self.volume_name_dict, filename)
AssertionError: ({1: 'duplicity-full.20120625T080651Z.vol1.difftar.gpg', 2: 'duplicity-full.20120625T080651Z.vol2.difftar.gpg', 3: 'duplicity-
...
...
...
full.20120625T080651Z.vol943.difftar.gpg', 944: 'duplicity-full.20120625T080651Z.vol944.difftar.gpg', 945: 'duplicity-full.20120625T080651Z.vol945.difftar.gpg', 946: 'duplicity-full.20120625T080651Z.vol946.difftar.gpg'}, 'duplicity-full.20120625T080651Z.vol606.difftar.gpg')

[Api (aa-pp-ii+launchpad)]

You can find in attach the debug log of the failure.
Please note that from now on, backup always fails.

[Api (aa-pp-ii+launchpad)]

I've re-run the backup many times:
- on the NEW remote SSH location, it always fails with the message reported in the bug log
- on the OLD remote SSH location, the backup is performed correctly
I've re-checked that both remote locations are correctly rsynced with proper file permissions and everything is perfectly identical.

[Hernan. (elmudometal)]

How to reproduce:
- full backup to a remote ubuntu one
in ubuntu 12.10 ->32bit

[sam tygier (samtygier)]

I am seeing a similar message while trying to restore a file

deja-dup_26.0-0ubuntu1_amd64.deb
Linux Mint 15 Olivia

Traceback (most recent call last):
  File "/usr/bin/duplicity", line 1411, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 1404, in with_tempdir
    fn()
  File "/usr/bin/duplicity", line 1286, in main
    globals.archive_dir).set_values()
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 693, in set_values
    self.get_backup_chains(partials + backend_filename_list)
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", lineTraceback (most recent call last):
  File "/usr/bin/duplicity", line 1411, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 1404, in with_tempdir
    fn()
  File "/usr/bin/duplicity", line 1286, in main
    globals.archive_dir).set_values()
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 693, in set_values
    self.get_backup_chains(partials + backend_filename_list)
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 816, in get_backup_chains
    map(add_to_sets, filename_list)
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 806, in add_to_sets
    if set.add_filename(filename):
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 97, in add_filename
    (self.volume_name_dict, filename)
AssertionError: ({1: 'duplicity-full.20130105T232525Z.vol1.difftar', 2: 'duplicity-full.20130105T232525Z.vol2.difftar.gz',
...
full.20130105T232525Z.vol714.difftar.gz', 715: 'duplicity-full.20130105T232525Z.vol715.difftar.gz'}, 'duplicity-full.20130105T232525Z.vol1.difftar.gz')