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[Matt Riedemann <mriedem@xxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1611321

Title:
  HyperV: shelve vm deadlock

Status in compute-hyperv:
  New
Status in OpenStack Compute (nova):
  In Progress
Status in OpenStack Compute (nova) mitaka series:
  New

Bug description:
  At the moment, the instance snapshot operation is synchronized using
  the instance uuid. This was added some time ago, as the instance
  destroy operation was failing when an instance snapshot was in
  proggress.

  This is now causing a deadlock, as a similar lock was recently
  introduced in the manager for the shelve operation by this change:
  Id36b3b9516d72d28519c18c38d98b646b47d288d

  We can safely remove the lock from the HyperV driver as we now stop
  pending jobs when destroying instances.

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