Ceph

1. coding: utf-8
   from boto3.session import Session
   import boto3
   import logging
   boto3.set_stream_logger('', logging.DEBUG)
   access_key = ''
   secret_key = ''
   host = "s3.amazonaws.com"
   url = "http://s3.amazonaws.com"
   session = Session(access_key, secret_key)
   config = boto3.session.Config(connect_timeout=30000, read_timeout=30000, retries={'max_attempts': 0}, signature_version="s3")
   s3_client = session.client('s3', endpoint_url=url, config=config)
   dst_bucket = "destbucket"
   dst_obj = 'destobject'
   src_bucket = "srcbucketnotexist"
   src_obj = 'srcobjectnotexist'
   mpu = s3_client.create_multipart_upload(Bucket=dst_bucket, Key=dst_obj)
   res = s3_client.upload_part_copy(Bucket=dst_bucket, CopySource=src_bucket+"/"+src_obj,
   Key=dst_obj,
   PartNumber=1, UploadId=mpu["UploadId"])

when src bucket not exist, it should return -ERR_NO_SUCH_BUCKET rather than -ENOENT
when src object not exist, it should return -ENOENT rather than -ACCESS