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[Loganathan Parthipan <1274137@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

The suspend() function in libvirt driver issues a managedsave() call and
returns immediately. This will result in the compute manager setting
task_state to None from 'suspending'.

This is not good. It's possible for a host to be set to reboot assuming
all VMs are in stable states or other Operations on the VM itself may
get through for task_state is None.

It would be good if driver suspend() actually wait for the power_state
to move from PAUSED to SHUTOFF and then return control to the manager.
This would make sure there are no inconsistent task_states reported.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1274137

Title:
  Libvirt driver suspend returns before completion of the task

Status in OpenStack Compute (Nova):
  New

Bug description:
  The suspend() function in libvirt driver issues a managedsave() call
  and returns immediately. This will result in the compute manager
  setting task_state to None from 'suspending'.

  This is not good. It's possible for a host to be set to reboot
  assuming all VMs are in stable states or other Operations on the VM
  itself may get through for task_state is None.

  It would be good if driver suspend() actually wait for the power_state
  to move from PAUSED to SHUTOFF and then return control to the manager.
  This would make sure there are no inconsistent task_states reported.

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