duplicity --file-to-restore backups/mysql  --time 2D file://media/alain/My\ 
Book/duplicity-15.10 /restore
Les métadonnées locales et distantes sont déjà synchronisées. Aucune 
synchronisation nécessaire.
Date de la dernière sauvegarde complète : aucune
Phrase de passe GnuPG 
Traceback (most recent call last):
  File "/usr/bin/duplicity", line 1519, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 1513, in with_tempdir
    fn()
  File "/usr/bin/duplicity", line 1370, in main
    do_backup(action)
  File "/usr/bin/duplicity", line 1447, in do_backup
    restore(col_stats)
  File "/usr/bin/duplicity", line 715, in restore
    restore_get_patched_rop_iter(col_stats)):
  File "/usr/bin/duplicity", line 737, in restore_get_patched_rop_iter
    backup_chain = col_stats.get_backup_chain_at_time(time)
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 960, 
in get_backup_chain_at_time
    raise CollectionsError("No backup chains found")
CollectionsError: No backup chains found

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https://bugs.launchpad.net/bugs/1086374

Title:
  Backup cannot be restored (no signature chains found)

Status in Duplicity:
  New
Status in duplicity package in Ubuntu:
  New

Bug description:
  I get:

  [root@ ]# duplicity list-current-files scp://192.168.11.2/backup/caw-server1
  Local and Remote metadata are synchronized, no sync needed.
  Last full backup date: none
  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 1322, in main
  list_current(col_stats)
  File "/usr/bin/duplicity", line 598, in list_current
  sig_chain = col_stats.get_signature_chain_at_time(time)
  File "/usr/lib64/python2.6/site-packages/duplicity/collections.py", line 977, 
in get_signature_chain_at_time
  raise CollectionsError("No signature chains found")
  CollectionsError: No signature chains found

  when trying to list files from my backup.  But the files seem ok outside of 
duplicity,
  This affects multiple servers backing up to different locations.

  OS is CentOS 6.2 x86
  Duplicity 0.6.18 from the repos

  ---
  Using archive dir: /root/.cache/duplicity/1dc0bb65e1eb97582ca301487786e1b1
  Using backup name: 1dc0bb65e1eb97582ca301487786e1b1
  Import of duplicity.backends.ftpsbackend Succeeded
  Import of duplicity.backends.u1backend Succeeded
  Import of duplicity.backends.ftpbackend Succeeded
  Import of duplicity.backends.webdavbackend Succeeded
  Import of duplicity.backends.hsibackend Succeeded
  Import of duplicity.backends.imapbackend Succeeded
  Import of duplicity.backends.botobackend Succeeded
  Import of duplicity.backends.cloudfilesbackend Succeeded
  Import of duplicity.backends.rsyncbackend Succeeded
  Import of duplicity.backends.sshbackend Succeeded
  Import of duplicity.backends.tahoebackend Succeeded
  Import of duplicity.backends.localbackend Succeeded
  Import of duplicity.backends.giobackend Succeeded
  Import of duplicity.backends.gdocsbackend Succeeded
  Main action: list-current
  
================================================================================
  duplicity 0.6.18 (February 29, 2012)
  Args: /usr/bin/duplicity -v9 list-current-files --no-encryption 
scp://192.168.11.1/backup/caw-server2
  Linux caw-server2.cawdekempen.be 2.6.32-220.23.1.el6.x86_64 #1 SMP Mon Jun 18 
18:58:52 BST 2012 x86_64 x86_64
  /usr/bin/python 2.6.6 (r266:84292, Jun 18 2012, 14:18:47) 
  [GCC 4.4.6 20110731 (Red Hat 4.4.6-3)]
  
================================================================================
  Local and Remote metadata are synchronized, no sync needed.
  0 files exist on backend
  0 files exist in cache
  Extracting backup chains from list of files: []
  Last full backup date: none
  Collection Status
  -----------------
  Connecting with backend: SftpBackend
  Archive dir: /root/.cache/duplicity/1dc0bb65e1eb97582ca301487786e1b1

  Found 0 secondary backup chains.
  No backup chains with active signatures found
  No orphaned or incomplete backup sets found.
  Using temporary directory /tmp/duplicity-ckTuyx-tempdir
  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 1322, in main
      list_current(col_stats)
    File "/usr/bin/duplicity", line 598, in list_current
      sig_chain = col_stats.get_signature_chain_at_time(time)
    File "/usr/lib64/python2.6/site-packages/duplicity/collections.py", line 
977, in get_signature_chain_at_time
      raise CollectionsError("No signature chains found")
  CollectionsError: No signature chains found

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