所有命令都重複失敗，斷言 filecount == len(self.files_changed) AssertionError

無論我在這個重複配置文件上嘗試哪個命令，它總是會出錯。

duply database status
duply database bkp
duply database purge

它們都返回類似於以下的跟踪

Start duply v1.11.3, time is 2017-11-30 12:20:12.
Using profile '/etc/duply/database'.
Using installed duplicity version 0.7.12, python 2.7.5, gpg 2.0.22 (Home: ~/.gnupg), awk 'GNU Awk 4.0.2', grep 'grep (GNU grep) 2.20', bash '4.2.46(1)-release (x86_64-redhat-linux-gnu)'.
Checking TEMP_DIR '/srv/mysql/logs/duply_backup/duply_tmp' is a folder and writable (OK)
Test - En/Decryption skipped. (GPG disabled)

--- Start running command PURGE at 12:20:12.397 ---
Using archive dir: /srv/mysql/logs/duply_backup/duply_cache/duply_database
Using backup name: duply_database
Import of duplicity.backends.acdclibackend Succeeded
Import of duplicity.backends.azurebackend Succeeded
Import of duplicity.backends.b2backend Succeeded
Import of duplicity.backends.botobackend Succeeded
Import of duplicity.backends.cfbackend Succeeded
Import of duplicity.backends.copycombackend Succeeded
Import of duplicity.backends.dpbxbackend Failed: No module named dropbox
Import of duplicity.backends.gdocsbackend Succeeded
Import of duplicity.backends.giobackend Succeeded
Import of duplicity.backends.hsibackend Succeeded
Import of duplicity.backends.hubicbackend Succeeded
Import of duplicity.backends.imapbackend Succeeded
Import of duplicity.backends.lftpbackend Succeeded
Import of duplicity.backends.localbackend Succeeded
Import of duplicity.backends.mediafirebackend Succeeded
Import of duplicity.backends.megabackend Succeeded
Import of duplicity.backends.multibackend Succeeded
Import of duplicity.backends.ncftpbackend Succeeded
Import of duplicity.backends.onedrivebackend Succeeded
Import of duplicity.backends.par2backend Succeeded
Import of duplicity.backends.pydrivebackend Succeeded
Import of duplicity.backends.rsyncbackend Succeeded
Import of duplicity.backends.ssh_paramiko_backend Succeeded
Import of duplicity.backends.ssh_pexpect_backend Succeeded
Import of duplicity.backends.swiftbackend Succeeded
Import of duplicity.backends.sxbackend Succeeded
Import of duplicity.backends.tahoebackend Succeeded
Import of duplicity.backends.webdavbackend Succeeded
Main action: remove-old
================================================================================
duplicity 0.7.12 (March 21, 2017)
Args: /bin/duplicity remove-older-than 8W --archive-dir /srv/mysql/logs/duply_backup/duply_cache --name duply_database --no-encryption --verbosity 5 --full-if-older-than 4W --volsize 50 --include-filelist /etc/duply/database/include --exclude-filelist /etc/duply/database/exclude --rsync-options --rsh="ssh -oBatchMode=yes -i /root/.ssh/duplicity_scp.dsa" --copy-links rsync://root@10.21.230.69:22//backup-lun/duplicity//eventlogdb-core-01/database
Linux eventlogdb-core-01.ecnza.net 3.10.0-514.6.1.el7.x86_64 #1 SMP Wed Jan 18 13:06:36 UTC 2017 x86_64 x86_64
/bin/python2 2.7.5 (default, Nov  6 2016, 00:28:07) 
[GCC 4.8.5 20150623 (Red Hat 4.8.5-11)]
================================================================================
Reading results of 'rsync -e 'ssh -p 22 -oBatchMode=yes ' --rsh="ssh -oBatchMode=yes -i /root/.ssh/duplicity_scp.dsa" root@10.21.230.69:/backup-lun/duplicity//eventlogdb-core-01/database/'
Local and Remote metadata are synchronized, no sync needed.
Reading results of 'rsync -e 'ssh -p 22 -oBatchMode=yes ' --rsh="ssh -oBatchMode=yes -i /root/.ssh/duplicity_scp.dsa" root@10.21.230.69:/backup-lun/duplicity//eventlogdb-core-01/database/'
Processing local manifest /srv/mysql/logs/duply_backup/duply_cache/duply_database/duplicity-full.20171010T231503Z.manifest.part (634880)
Using temporary directory /srv/mysql/logs/duply_backup/duply_tmp/duplicity-k1XfbU-tempdir
Traceback (most recent call last):
 File "/bin/duplicity", line 1546, in <module>
   with_tempdir(main)
 File "/bin/duplicity", line 1540, in with_tempdir
   fn()
 File "/bin/duplicity", line 1391, in main
   do_backup(action)
 File "/bin/duplicity", line 1416, in do_backup
   globals.archive_dir).set_values()
 File "/usr/lib64/python2.7/site-packages/duplicity/collections.py", line 710, in set_values
   self.get_backup_chains(partials + backend_filename_list)
 File "/usr/lib64/python2.7/site-packages/duplicity/collections.py", line 836, in get_backup_chains
   add_to_sets(f)
 File "/usr/lib64/python2.7/site-packages/duplicity/collections.py", line 830, in add_to_sets
   if new_set.add_filename(filename):
 File "/usr/lib64/python2.7/site-packages/duplicity/collections.py", line 101, in add_filename
   self.set_manifest(filename)
 File "/usr/lib64/python2.7/site-packages/duplicity/collections.py", line 148, in set_manifest
   self.set_files_changed()
 File "/usr/lib64/python2.7/site-packages/duplicity/collections.py", line 128, in set_files_changed
   mf = self.get_manifest()
 File "/usr/lib64/python2.7/site-packages/duplicity/collections.py", line 250, in get_manifest
   return self.get_local_manifest()
 File "/usr/lib64/python2.7/site-packages/duplicity/collections.py", line 224, in get_local_manifest
   return manifest.Manifest().from_string(manifest_buffer)
 File "/usr/lib64/python2.7/site-packages/duplicity/manifest.py", line 208, in from_string
   assert filecount == len(self.files_changed)
AssertionError

12:20:14.362 Task 'PURGE' failed with exit code '30'.
--- Finished state FAILED 'code 30' at 12:20:14.362 - Runtime 00:00:01.964 ---

這條評論幫助我解決了這個問題

“刪除最後一個損壞的備份”

所有 .part 文件都是不完整的備份

ll /srv/mysql/logs/duply_backup/duply_cache/duply_database/*.part

刪除不完整的備份。如果您想更加保守，輸出會告訴您哪些文件導致了問題。

Processing local manifest /srv/mysql/logs/duply_backup/duply_cache/duply_database/duplicity-full.20171010T231503Z.manifest.part

否則，您可以清理所有*.parts

rm /srv/mysql/logs/duply_backup/duply_cache/duply_database/*.part

刪除這些文件後它可以正常工作。這些都是不完整的備份，應該以任何方式清理。

引用自：https://unix.stackexchange.com/questions/407944