[gaul]

> They claim 100% S3 compatibility but it fails a large number of API calls using Ceph’s s3-test. I didn’t dig into this too far but they do claim “No need to change your S3-compatible application” so changing my endpoint + credentials should have worked. To their credit - PUT, GET and DELETE did work but that is only 3 of 100’s of API’s.

Validating claims of S3 compatibility is important. The S3 API has corner cases like and misfeatures like BitTorrent hosting but sometimes vendors omit key features like multi-part upload and v4 signatures. s3-tests[1] is the best way we have to evaluate implementations yet only Ceph and S3Proxy seem to contribute to it. Users should hold vendors' feet to the fire about these these claims.

[1] https://github.com/ceph/s3-tests