[Duplicity-talk] Error with incremental backup

[Andre Schütz]

Hello,

we are using duplicity to make a full and incremental backups of our Rackspace 
Cloud servers to their Cloud Files system. Five weeks ago, we made the first 
full backup and during the last 4 weeks, the incremental backups were fine. 
This week, we got an error message from duplicity that looks as follows:

##
# begin / error message
##

Synchronizing remote metadata to local cache...
Deleting local 
/root/.cache/duplicity/e35e14d063396970be61d60457c85dc5/duplicity-new-signatures.20110628T010003Z.to.20110703T010003Z.sigtar.gz
 (not authoritative at backend).
Deleting local 
/root/.cache/duplicity/e35e14d063396970be61d60457c85dc5/duplicity-new-signatures.20110703T010003Z.to.20110710T010004Z.sigtar.gz
 (not authoritative at backend).
Deleting local 
/root/.cache/duplicity/e35e14d063396970be61d60457c85dc5/duplicity-new-signatures.20110710T010004Z.to.20110717T010003Z.sigtar.gz
 (not authoritative at backend).
Deleting local 
/root/.cache/duplicity/e35e14d063396970be61d60457c85dc5/duplicity-new-signatures.20110717T010003Z.to.20110724T010004Z.sigtar.gz
 (not authoritative at backend).
Warning, found signatures but no corresponding backup files
Last full backup date: Tue Jun 28 01:00:03 2011
No signatures found, switching to full backup.
Upload of 'duplicity-full.20110731T010004Z.vol5476.difftar.gpg' failed (attempt 
1): sslerror: The read operation timed out
Upload of 'duplicity-full.20110731T010004Z.vol5476.difftar.gpg' failed (attempt 
2): sslerror: The read operation timed out
Upload of 'duplicity-full.20110731T010004Z.vol5476.difftar.gpg' failed (attempt 
3): sslerror: The read operation timed out
Upload of 'duplicity-full.20110731T010004Z.vol5476.difftar.gpg' failed (attempt 
4): sslerror: The read operation timed out
Upload of 'duplicity-full.20110731T010004Z.vol5476.difftar.gpg' failed (attempt 
5): sslerror: The read operation timed out
Giving up uploading 'duplicity-full.20110731T010004Z.vol5476.difftar.gpg' after 
5 attempts
BackendException: Error uploading 
'duplicity-full.20110731T010004Z.vol5476.difftar.gpg'

##
# end / error message
##

The duplicity files are available and we do not understand why duplicity did 
not find the corresponding backup files.
Furthermore, the system did not change during the last week. Why the second 
BackendException?

Any idea?

Best regards,
Andre Schütz