I'm also seeing this error pop up in the last few days, despite not
making any changes to the  backup configuration (using deja-dup).

Thanks Kenneth for the suggestion above about running with the -v9
command.

Is there a way that I could see the exact duplicity backup command
that's triggered by deja-dup? (I'm new to duplicity & deja-dup). Thanks!

Here's my system details:

➜  ~ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 18.04.1 LTS
Release:        18.04
Codename:       bionic

➜  ~ uname -a
Linux ryzen 4.15.0-30-generic #32-Ubuntu SMP Thu Jul 26 17:42:43 UTC 2018 
x86_64 x86_64 x86_64 GNU/Linux

And the error message:

Traceback (innermost last):
  File "/usr/bin/duplicity", line 1555, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 1541, in with_tempdir
    fn()
  File "/usr/bin/duplicity", line 1393, in main
    do_backup(action)
  File "/usr/bin/duplicity", line 1523, in do_backup
    incremental_backup(sig_chain)
  File "/usr/bin/duplicity", line 668, in incremental_backup
    globals.backend)
  File "/usr/bin/duplicity", line 432, in write_multivol
    at_end = gpg.GzipWriteFile(tarblock_iter, tdp.name, globals.volsize)
  File "/usr/lib/python2.7/dist-packages/duplicity/gpg.py", line 446, in 
GzipWriteFile
    new_block = block_iter.next()
  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 2510, in next
    tarinfo = self.tarfile.next()
  File "/usr/lib/python2.7/tarfile.py", line 2350, in next
    self.fileobj.seek(self.offset - 1)
  File "/usr/lib/python2.7/gzip.py", line 443, in seek
    self.read(1024)
  File "/usr/lib/python2.7/gzip.py", line 268, in read
    self._read(readsize)
  File "/usr/lib/python2.7/gzip.py", line 332, in _read
    self._read_eof()
  File "/usr/lib/python2.7/gzip.py", line 354, in _read_eof
    hex(self.crc)))
 IOError: CRC check failed 0x83aebe8 != 0xa6bb597L

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to duplicity in Ubuntu.
https://bugs.launchpad.net/bugs/875676

Title:
  Backing up fails with 'IOError CRC check failed'.

Status in Duplicity:
  In Progress
Status in duplicity package in Ubuntu:
  Confirmed

Bug description:
  For 4 days déjà dup hasn't been able to perform a backup. It fails
  with the error

  Failed to read /tmp/duplicity-lJcUDl-tempdir/mktemp-o4LYSJ-1: (<type
  'exceptions.IOError'>, IOError('CRC check failed 0x8434f7d2L !=
  0x3d503338L',), <traceback object at 0x9fe0554>)

  There is another similar bug #676767 where deleting ~/.cache/deja-dup
  helps. In this case it doesn't.

  I'm quite certain that my backup drive isn't corrupted. (It's a
  raid5.) I'd be happy to provide any additional information needed.

  ----------

  System information:
  Ubuntu 11.10
  deja-dup 20.0-0ubuntu3
  duplicity 0.6.15-0ubuntu2

  Logs:
  deja-dup.log: http://pastie.org/2705320
  deja-dup.gsettings: http://pastie.org/2705322

To manage notifications about this bug go to:
https://bugs.launchpad.net/duplicity/+bug/875676/+subscriptions

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