[Bug 2131790] Please test proposed package

[Edward Hope-Morley]

Hello Ponnuvel, or anyone else affected,

Accepted ceph into yoga-proposed. The package will build now and be
available in the Ubuntu Cloud Archive in a few hours, and then in the
-proposed repository.

Please help us by testing this new package. To enable the -proposed
repository:

  sudo add-apt-repository cloud-archive:yoga-proposed
  sudo apt-get update

Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-yoga-needed to verification-yoga-done. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-yoga-failed. In either case, details of your testing
will help us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in
advance!

** Changed in: cloud-archive/yoga
       Status: New => Fix Committed

** Tags added: verification-yoga-needed

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https://bugs.launchpad.net/bugs/2131790

Title:
  RGW - etag not returned on multipart upload

Status in Ubuntu Cloud Archive:
  Fix Released
Status in Ubuntu Cloud Archive yoga series:
  Fix Committed
Status in ceph package in Ubuntu:
  Fix Released
Status in ceph source package in Jammy:
  Fix Released
Status in ceph source package in Noble:
  Fix Released

Bug description:
  Thank you @pponnuvel for the original description!

  [ Impact ]
  Currently in ceph 17.2.9, when doing multipart uploads, the etag of the multipart upload is not returned. This causes issues with some applications that rely on ceph and the etag which now have to calculate the etag manually causing performance issues.
  The issue was fixed upstream through https://github.com/ceph/ceph/pull/56453.
  However this commit caused regressions and three other commits that are part of this PR are also needed to resolve them: https://github.com/ceph/ceph/pull/57257

  A total of 4 commits are needed to resolve the issue.

  [ Test Plan ]
  1- Deploy ceph 17.2.9
  2- Use the awscli tool to upload a file large enough that it would be sent as part of a multipart upload. Make sure to use the "--debug" argument to verify if the etag is being returned or not:
  aws s3 --profile ceph --endpoint-url <ceph URL> cp ./test.txt s3://test-bucket/ --debug

  Currently the following output is seen towards the end of the debug
  log:

  2026-04-14 22:47:57,150 - ThreadPoolExecutor-0_3 - botocore.parsers - DEBUG - Response body:
  b'<?xml version="1.0" encoding="UTF-8"?><CompleteMultipartUploadResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/"><Location>http://10.159.7.70/test-bucket/test.txt</Location><Bucket>test-bucket</Bucket><Key>test.txt</Key><ETag></ETag></CompleteMultipartUploadResult>'

  Where the <ETag></ETag> clause is empty.

  The output should look like the following:

  2026-04-14 22:47:57,150 - ThreadPoolExecutor-0_3 - botocore.parsers - DEBUG - Response body:
  b'<?xml version="1.0" encoding="UTF-8"?><CompleteMultipartUploadResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/"><Location>http://10.159.7.70/test-bucket/test.txt</Location><Bucket>test-bucket</Bucket><Key>test.txt</Key><ETag>9609801fffde7f91a34c9686065d9785-2</ETag></CompleteMultipartUploadResult>'

  With the <ETag> clause being populated.

  3- Finally download the file from ceph to confirm that it is not corrupted:
  aws s3 --profile ceph cp s3://test-bucket/test.txt ./test-from-ceph.txt --endpoint-url <ceph URL>

  4- Compare both sha256 of the files to make sure they are the same
  sha256sum test.txt test-from-ceph.txt

  Alternatively use the command "cmp -l test.txt test-from-ceph.txt" to
  confirm that they are the same. No diff should be printed in the
  terminal if they are the same.

  [ Where problems could occur ]

  * Since the fix touches on the upload logic of ceph, there is a chance that issues related to uploading data to ceph fails.
  * ETag might still fail to be included similarly to previous patches that tried resolving this issue but failed

  [Original Description]
  With 17.2.9, when doing multipart uploads, etags don't get returned. And the etag body is empty.

  This was supposed to be fixed in the bug:
  https://github.com/ceph/ceph/pull/51446

  However, we still see the issue with that fix too (which is part of
  17.2.9).

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