The standard S3 List Objects call will give you the listing of all the objects in the bucket, including Last Modified, Size, and Etag.

http://docs.aws.amazon.com/AmazonS3/latest/API/RESTBucketGET.html

In ECS, objects are not owned by a node, but by the VDC as a whole.  The object will be owned by the VDC that processed the object create request.  Currently, we do not have a public API that returns the object owner VDC.

Hi Jason,

Thanks for your answer but we are testing the behaviour of our 2 replicated ECS systems (1 per datacenter) during a datacenter outage.

We need to check the ownership of buckets and objects before, during and after the outage, with buckets where "Access during outage" has been set.

Is there a way to get this information?