I ran into the same problem. duplicity version 0.6.15 (might have been 0.6.14 when doing the backup). I used backintime for years until december 2011, found deja dup, and deleted the plain backup after a successful backup with deja dup. What a mistake.
After an update the system broke and was not bootable. No problem, as i assumed the backup was there. I ran into the SHA1 mismatch issue. I have 699 .difftar.pgp files out of which 7 could not be processed with duplicity. I tried out the instructions from https://live.gnome.org/DejaDup/Help/Restore/WorstCase (Thanks for those MichaelTerry!) and was relieved when I saw the folders reappearing. Micheal's instructions take you to the point where the files are spread onto two folders multivol_snapshot and snapshot , the first one containing one folder per file, which then contains 64kb parts of the actual file. As I wanted to restore as much - and as good - as possible, I looked for scripts that do the 'cat' automatically . I found 2 or 3 scipts, and I tested the one from here https://gist.github.com/1365425 on the 70GB of original data. One run takes several hours. It creates the files, but something goes wrong. Lets say an Image was spread on 4 blocks. If I want to view that image, half of it looks ok, the rest ist missing. Or the image looks picassofied. Funny, at times if *it just wasn't the only backup of past 10 years* This person describes a similar behavior. https://bugs.launchpad.net/duplicity/+bug/713832/comments/1 I don't mind loosing business docs, even if not all of them are in the companies data centre. I don't mind loosing many hundreds of source code files, I am sure I can redo that. But the pictures? So obviously the question is: Is there a chance to reassemble the blocks in a way that the resulting jpeg files are not corrupted? Or alternatively: Does anyone know a data curation solution that detects such corruptions? Possibly the data is present, at least for 70,80,(95?) % and it is the recombining of the blocks that creates the problem. Truly, any help and hints appreciated. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/487720 Title: Restore fails with "Invalid data - SHA1 hash mismatch" To manage notifications about this bug go to: https://bugs.launchpad.net/deja-dup/+bug/487720/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
