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[melanie witt <1750666@xxxxxxxxxxxxxxxxxx>]

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

** Tags added: queens-rc-potential volumes

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

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https://bugs.launchpad.net/bugs/1750666

Title:
  Deleting an instance before scheduling with BFV fails to detach volume

Status in OpenStack Compute (nova):
  Fix Released
Status in OpenStack Compute (nova) pike series:
  New
Status in OpenStack Compute (nova) queens series:
  New

Bug description:
  If you try to boot and instance and delete it early before scheduling,
  the '_delete_while_booting' codepath hits
  `_attempt_delete_of_buildrequest` which tries to remove the block
  device mappings.

  However, if the cloud contains compute nodes before Pike, no block
  device mappings will be present in the database (because they are only
  saved if using the new attachment flow), which means the attachment
  IDs are empty and the volume delete fails:

  2018-02-20 16:02:25,063 WARNING [nova.compute.api] Ignoring volume
  cleanup failure due to Object action obj_load_attr failed because:
  attribute attachment_id not lazy-loadable

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