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From "Thomas O'Dowd (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CLOUDSTACK-4171) Xen/XCP snapshot uploading to S3 server should use multipart upload API.
Date Thu, 08 Aug 2013 01:38:48 GMT
Thomas O'Dowd created CLOUDSTACK-4171:
-----------------------------------------

             Summary: Xen/XCP snapshot uploading to S3 server should use multipart upload
API.
                 Key: CLOUDSTACK-4171
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-4171
             Project: CloudStack
          Issue Type: Improvement
      Security Level: Public (Anyone can view this level - this is the default.)
    Affects Versions: 4.2.0
            Reporter: Thomas O'Dowd


Currently when a snapshot is being uploaded to S3, it uses a single S3 PUT request. Snapshots
can be large and Amazon recommends using the multipart upload API once the payload reaches
100MB [1] although it's possible to use the single object PUT api up until 5GB.

>From the SMlog we can see the single PUT being used:
[16279] 2013-08-02 08:48:54.730958 #### VMOPS Sent PUT request to s3.cloudian.com:18080/images/snapshots/5a28d935-47da-4813-a692-db92761ce7de
with headers {'Content-Length': '50430464', 'Content-MD5': 'oafg2xPUPPAnyE1sxmf+qA==', 'Expect':
'100-continue', 'Date': 'Fri, 02 Aug 2013 08:48:52 +0000', 'Content-Type': 'application/octet-stream',
'Authorization': 'AWS 00ba9a7f9a8142b070c3:fy03ARq2UQWKW2UndUSYJ/E+QfI='}. Received response
status 200: OK ####

[1] http://docs.aws.amazon.com/AmazonS3/latest/dev/UploadingObjects.html

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