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[kexiaodong <kexiaodong@xxxxxxxxxx>]

Public bug reported:

Update quota multi-value in one request is not an atomicity operation.
I update quota(floating_ips, key_pairs, instances, ram) in one request, and then get response code 400, because of ram should not less than used. That is ok. The problem is that floating_ips, key_pairs, instances have updated.
I think the update operation should be an atomicity operation. When update failed, we should roll back all the change on quota.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1291199

Title:
  update quota multi-value in one request, half done half failed

Status in OpenStack Compute (Nova):
  New

Bug description:
  Update quota multi-value in one request is not an atomicity operation.
  I update quota(floating_ips, key_pairs, instances, ram) in one request, and then get response code 400, because of ram should not less than used. That is ok. The problem is that floating_ips, key_pairs, instances have updated.
  I think the update operation should be an atomicity operation. When update failed, we should roll back all the change on quota.

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