[Bug 1196924] Re: Stop and Delete operations should give the Guest a chance to shutdown

[Chris J Arges]

** Also affects: nova (Ubuntu Trusty)
   Importance: Undecided
       Status: New

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Title:
  Stop and Delete operations should give the Guest a chance to shutdown

Status in OpenStack Compute (nova):
  Fix Released
Status in nova package in Ubuntu:
  In Progress
Status in nova source package in Trusty:
  New

Bug description:
  [Impact]

   * VMs being shutdown with any signal/notification from the The
  hypervisor level, services running inside VMs have no chance to
  perform a clean shutoff

  [Test Case]

   * 1. stop a VM 
     2. the VM is shutdown without any notification

  [Regression Potential]

   * none


  Currently in libvirt stop and delete operations simply destroy the
  underlying VM.     Some GuestOS's do not react well to this type of
  power failure, and it would be better if these operations followed the
  same approach a a soft_reboot and give the guest a chance to shutdown
  gracefully.   Even where VM is being deleted, it may be booted from a
  volume which will be reused on another server.

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