[Duplicity-talk] Strange exception during a restore with 1.2.1 from AWS

[Jakob Bohm]

Dear all,

I am testing the viability of my backups by restoring to a blank Linux 
computer loaded up with the decryption keys and the same patched 
duplicity 1.2.1 that I used for the backup (just a patch for the doubled 
--encrypt option and one for lowering the threshold for displaying 
actual progress numbers instead of "Stalled").

However when restoring a large partition, instead of restoring, it fails 
with the error messages below, the message doesn't say what the error is 
or what it was trying to do, just an error number and traceback of the 
stack with no specific context:

Added incremental Backupset (start_time: Thu May 25 02:13:30 2023 / 
end_time: Thu Jun 22 11:50:21 2023)
Added incremental Backupset (start_time: Thu Jun 22 11:50:21 2023 / 
end_time: Mon Jul  3 09:17:24 2023)
Added incremental Backupset (start_time: Mon Jul  3 09:17:24 2023 / 
end_time: Mon Jul 17 18:50:05 2023)
Added incremental Backupset (start_time: Mon Jul 17 18:50:05 2023 / 
end_time: Wed Jul 19 22:32:43 2023)
Added incremental Backupset (start_time: Wed Jul 19 22:32:43 2023 / 
end_time: Mon Jul 24 03:50:01 2023)
Added incremental Backupset (start_time: Mon Jul 24 03:50:01 2023 / 
end_time: Mon Aug  7 21:33:50 2023)
Local and Remote metadata are synchronized, no sync needed.
Last full backup date: Thu May 25 02:13:30 2023
Processing local manifest 
b'/bkup4/archive/wisemo-bk-real-more/wisemo-bk-real-more/wisemo-bk-real-more_duplicity-full.20230525T021330Z.manifest' 
(82148726)
Found 11293 volumes in manifest
Traceback (innermost last):
  File "/usr/local/bin/duplicity", line 86, in <module>
    with_tempdir(main)
  File "/usr/local/bin/duplicity", line 70, in with_tempdir
    fn()
  File "/usr/local/lib/python3.11/dist-packages/duplicity/dup_main.py", 
line 1575, in main
    do_backup(action)
  File "/usr/local/lib/python3.11/dist-packages/duplicity/dup_main.py", 
line 1658, in do_backup
    restore(col_stats)
  File "/usr/local/lib/python3.11/dist-packages/duplicity/dup_main.py", 
line 749, in restore
    restore_get_patched_rop_iter(col_stats)):
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/dist-packages/duplicity/dup_main.py", 
line 801, in restore_get_patched_rop_iter
file_names.append(backup_set.volume_name_dict[vol_num])
~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
 KeyError: 272



Enjoy

Jakob
--
Jakob Bohm, CIO, Partner, WiseMo A/S.  https://www.wisemo.com
Transformervej 29, 2860 Søborg, Denmark.  Direct +45 31 13 16 10
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