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[Kenneth Loafman <question284779@xxxxxxxxxxxxxxxxxxxxx>]

Question #284779 on Duplicity changed:
https://answers.launchpad.net/duplicity/+question/284779

    Status: Open => Answered

Kenneth Loafman proposed the following answer:
"sha1sum duplicity-full.20160205T033010Z.vol7485.difftar.gpg" will give you
the correct hash.  Save the manifest file and edit the original to insert
the correct hash.  That should get you past this problem.  Next time
consider breaking up the backup into more reasonable sized chunks.  It'll
be much more reliable that way.



On Mon, Feb 8, 2016 at 10:02 AM, Chris Bero <
question284779@xxxxxxxxxxxxxxxxxxxxx> wrote:

> New question #284779 on Duplicity:
> https://answers.launchpad.net/duplicity/+question/284779
>
> I'm excited to be using duplicity with some backups, but have run into
> some trouble and would like to know if it's recoverable.
>
> Using Duplicity version 0.7.06 I backed up a 1.8TB set of files to a local
> NAS via an NFS mount. This took many attempts, and a week of tinkering to
> accomplish. I had to restart the process due to issues such as gpg-agent
> timing out the passphrase. Eventually the backup completed successfully,
> but I don't remember if it was fresh (all NAS-side files removed first) or
> had been resumed. This will be something to watch better next time.
>
> I went on to immediately test the restore process by bringing the files
> back to a spare 2TB partition. Each volume is 100M.
>
> # duplicity --asynchronous-upload --force --num-retries 10 -v9
> file:///mnt/bkup /mnt/tmp/berocs
>
> Which made it to volume 7485 of 13821.
>
> Processed volume 7484 of 13821
> Registering (mktemp) temporary file
> /tmp/duplicity-UKeud7-tempdir/mktemp-bdrFu_-7494
> Deleting /tmp/duplicity-UKeud7-tempdir/mktemp-bdrFu_-7494
> Forgetting temporary file /tmp/duplicity-UKeud7-tempdir/mktemp-bdrFu_-7494
> Processed volume 7485 of 13821
> Registering (mktemp) temporary file
> /tmp/duplicity-UKeud7-tempdir/mktemp-61HOHl-7495
> Invalid data - SHA1 hash mismatch for file:
>  duplicity-full.20160205T033010Z.vol7485.difftar.gpg
>  Calculated hash: 9b905a77192131637bc6ae172a602f0c11896d73
>  Manifest hash: 35ffeea04fe95d30c153d841fe445c4c8a87d30e
>
> Releasing lockfile
> /root/.cache/duplicity/2dc20957bea0e51ed1d54f05c291ab69/lockfile.lock
> Removing still remembered temporary file
> /tmp/duplicity-UKeud7-tempdir/mktemp-61HOHl-7495
> Removing still remembered temporary file
> /tmp/duplicity-UKeud7-tempdir/mkstemp-B8zpTT-1
>
> I'd rather not go volume by volume to recover partial files, as is
> suggested in other threads concerning this error. Instead, since I still
> have the original files, is there a way to repair the backup without having
> to delete and re-transfer all 2TB again?
>
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