s3tools/s3cmd — pull request #74 by porcupie (2012-08-22 18:45:53+00:00)
Title: Multipart copy

I have added support for Multipart Copy (s3 to s3) in multipart_copy branch. It reuses the existing MultipartUpload functionality by subclassing and passing byte-ranges of the remote file (copy) instead of actual byte-ranged data from a local file (upload).

It might be useful to others. I see a few branches out there with more interesting Multipart functionality like threaded uploads and more robust error handling but have not tried to integrate with those features yet.