** Also affects: nova/newton
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1619602
Title:
  Hyper-V: vhd config drive images are not migrated

Status in compute-hyperv:
  New
Status in OpenStack Compute (nova):
  Fix Released
Status in OpenStack Compute (nova) newton series:
  In Progress

Bug description:
  During cold migration, vhd config drive images are not copied over, on
  the wrong assumption that the instance is already configured and does
  not need the config drive.

  There is an explicit check at the following location:
  
https://github.com/openstack/nova/blob/8f35bb321d26bd7d296c57f4188ec12fcde897c3/nova/virt/hyperv/migrationops.py#L75-L76

  For this reason, migrating instances using vhd config drives will fail, as 
there is a check ensuring that the config drive is present, if required:
  
https://github.com/openstack/nova/blob/8f35bb321d26bd7d296c57f4188ec12fcde897c3/nova/virt/hyperv/migrationops.py#L153-L163

  The Hyper-V driver should not skip moving the config drive image.

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