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[Lucian Petrut <1907216@xxxxxxxxxxxxxxxxxx>]

** Changed in: compute-hyperv
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1907216

Title:
  Wrong image ref after unshelve

Status in compute-hyperv:
  Fix Released
Status in OpenStack Compute (nova):
  Invalid

Bug description:
  After an instance is unshelved, the instance image ref will point to
  the original image instead of the snapshot created during the shelving
  [1][2].

  Subsequent instance operations will use the wrong image id. For
  example, in case of cold migrations, Hyper-V instances will be unable
  to boot since the differencing images will have the wrong base [3].
  Other image related operations might be affected as well.

  As pointed out by Matt Riedemann on the patch [1], Nova shouldn't set
  back the original image id, instead it should use the snapshot id.

  [1] I3bba0a230044613e07122a6d122597e5b8d43438
  [2] https://github.com/openstack/nova/blob/22.0.1/nova/compute/manager.py#L6625
  [3] http://paste.openstack.org/raw/800822/

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