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[edso <question206477@xxxxxxxxxxxxxxxxxxxxx>]

Question #206477 on Duplicity changed:
https://answers.launchpad.net/duplicity/+question/206477

edso posted a new comment:
a little clarification on why does not do this every time.

verification is an expensive process (bandwidth,cpu cycles) with
duplicity. because of the 'dumb backend' paradigm the verification has
happen locally. this means:

- mapping the file to verify to the remote volumes it is contained in
- downloading each of it and creating the file in tmp space
- downloading incrementals to patch it to state at the time stamp that needs to be verified
- compare it to the saved checksum

this is repeated for all files to be verified. essentially it is a restore that discards the files after checksum comparison.
i am not sure if duplicity repeats a volume download if it was already downloaded during the same run though.

..ede/duply.net

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