[Duplicity-talk] duplicity fails to do incremental backups on Ubuntu Feisty

[Gabriel Ambuehl]

Hi,
this leaves me dumbfounded: when I upgraded from Ubuntu Edgy to the Feisty pre 
releases, duplicity stopped working correctly. It still does backups, but 
whenever I try to run incremental backups, it just starts backing up 
everything again. The output says it compares the files to none like it would 
do for a full backup:

A very short test run for a directory with just one dummy file shows that (see 
below). The first backup is a full one like it should be, but the second one 
fails to use the signatures and does backup both entries again. 

I'd very much appreciate any comments on this. librsync in question is an  
Ubuntu Feisty package, namely:
librsync-dev       0.9.7-1           
librsync1          0.9.7-1            

This happens with both duplicity-0.4.2 from Ubuntu  and one installed with 
python setup.py install.

I'd very much appreciate any comments on this.

Regards,
Gabriel

Output of aforementioned test run:

$ duplicity -v 9  duplicity-test file:///tmp/duplicity/
Main action: inc
Collection Status
-----------------
Connecting with backend: LocalBackend
Archive dir: None
No backup chains with active signatures found

Found 0 backup chains without signatures.
No orphaned or incomplete backup sets found.
PASSPHRASE variable not set, asking user.
GnuPG passphrase:
Retype to confirm:
No signatures found, switching to full backup.
Selecting duplicity-test
Comparing () and None
Getting delta of (() duplicity-test dir) and None
Generating delta - new file: .
Selecting duplicity-test/helloworld.txt
Comparing ('helloworld.txt',) and None
Getting delta of (('helloworld.txt',) duplicity-test/helloworld.txt reg) and 
None
Generating delta - new file: helloworld.txt
Writing /tmp/duplicity/duplicity-full.2007-02-23T21:14:51+02:00.vol1.difftar.gpg
Deleting /tmp/tmpAhqUke
Writing /tmp/duplicity/duplicity-full.2007-02-23T21:14:51+02:00.manifest.gpg
Deleting /tmp/tmpTJT5LP
Writing 
/tmp/duplicity/duplicity-full-signatures.2007-02-23T21:14:51+02:00.sigtar.gpg
Deleting /tmp/tmpdB89Fl
Ignoring file 'duplicity-full-signatures.2007-02-23T21:14:51+02:00.sigtar.gpg'
--------------[ Backup Statistics ]--------------
StartTime 1172261693.29 (Fri Feb 23 21:14:53 2007)
EndTime 1172261693.31 (Fri Feb 23 21:14:53 2007)
ElapsedTime 0.02 (0.02 seconds)
SourceFiles 2
SourceFileSize 4101 (4.00 KB)
NewFiles 2
NewFileSize 4101 (4.00 KB)
DeletedFiles 0
ChangedFiles 0
ChangedFileSize 0 (0 bytes)
ChangedDeltaSize 0 (0 bytes)
DeltaEntries 2
RawDeltaSize 5 (5 bytes)
TotalDestinationSizeChange 386 (386 bytes)
Errors 0
-------------------------------------------------

$ duplicity -v 9  duplicity-test file:///tmp/duplicity/
Main action: inc
Ignoring file 'duplicity-full-signatures.2007-02-23T21:14:51+02:00.sigtar.gpg'
Collection Status
-----------------
Connecting with backend: LocalBackend
Archive dir: None

Found a complete backup chain with matching signature chain:
-------------------------
Chain start time: Fri Feb 23 21:14:51 2007
Chain end time: Fri Feb 23 21:14:51 2007
Number of contained backup sets: 1
Total number of contained volumes: 1
 Type of backup set:                            Time:      Num volumes:
                Full         Fri Feb 23 21:14:51 2007                 1
-------------------------

Found 0 backup chains without signatures.
No orphaned or incomplete backup sets found.
PASSPHRASE variable not set, asking user.
GnuPG passphrase:
Retype to confirm:
gpg: CAST5 encrypted data
gpg: encrypted with 1 passphrase
gpg: WARNING: message was not integrity protected
Deleting /tmp/tmpky59bq
Selecting duplicity-test
gpg: CAST5 encrypted data
gpg: encrypted with 1 passphrase
gpg: WARNING: message was not integrity protected
Deleting /tmp/tmp-q8ORM
Comparing () and None
Getting delta of (() duplicity-test dir) and None
Generating delta - new file: .
Selecting duplicity-test/helloworld.txt
Comparing ('helloworld.txt',) and None
Getting delta of (('helloworld.txt',) duplicity-test/helloworld.txt reg) and 
None
Generating delta - new file: helloworld.txt
Writing 
/tmp/duplicity/duplicity-inc.2007-02-23T21:14:51+02:00.to.2007-02-23T21:14:56+02:00.vol1.difftar.gpg
Deleting /tmp/tmpZ-nHiO
Writing 
/tmp/duplicity/duplicity-inc.2007-02-23T21:14:51+02:00.to.2007-02-23T21:14:56+02:00.manifest.gpg
Deleting /tmp/tmpsGPFec
Writing 
/tmp/duplicity/duplicity-new-signatures.2007-02-23T21:14:51+02:00.to.2007-02-23T21:14:56+02:00.sigtar.gpg
Deleting /tmp/tmpJCyDh9
--------------[ Backup Statistics ]--------------
StartTime 1172261698.79 (Fri Feb 23 21:14:58 2007)
EndTime 1172261699.10 (Fri Feb 23 21:14:59 2007)
ElapsedTime 0.31 (0.31 seconds)
SourceFiles 2
SourceFileSize 4101 (4.00 KB)
NewFiles 2
NewFileSize 4101 (4.00 KB)
DeletedFiles 0
ChangedFiles 0
ChangedFileSize 0 (0 bytes)
ChangedDeltaSize 0 (0 bytes)
DeltaEntries 2
RawDeltaSize 5 (5 bytes)
TotalDestinationSizeChange 384 (384 bytes)
Errors 0
-------------------------------------------------

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