Backup restore fails

[SteveTyrer]

I am restoring all my data from my old Ubuntu 12.04 32bit system to a new Ubuntu 13.10 64bit system (on the same computer but a full reinstall)
deja dub keeps stopping with this warning

"Invalid data - SHA1 hash mismatch for file:
duplicity-full.20131206T092901Z.vol133.difftar.gz
Calculated hash: d7010d8ca5b368b9c34c97de2fe729473a7f38bd
Manifest hash: eeab0b2d4620c9a8f4f09ee2591a9d26f44bad0f"

Any thoughts on what is happening

[tgalati4]

The data is probably OK. I would guess a mismatch between 32-bit and 64-bit. This is a use case that I'm sure deja-dup was not designed to handle. Find (or build) a 32-bit machine and perform the restore and if that is OK then simply transfer the files manually to the 64-bit machine.

[SteveTyrer]

Thanks for that I will give it a try, and report back

[SteveTyrer]

Tried importing to 12.04 32bit but it failed at the same point, so looks like the backup is corrupt, I have retrieved 90% of my data so no big problem, but I would like
to understand what went wrong.

[tgalati4]

This may be your first experience with bit rot (http://en.wikipedia.org/wiki/Bit_rot). Since the file was dated December 2013, it's most likely a hard disk problem. Check the SMART status of the drive to see if any errors were logged.