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[Matt Riedemann <mriedem@xxxxxxxxxx>]

To clarify step 2:

"2 sleep the VM (windows:using the arrow button next to the Shut down
button on the Start menu.)"

I'm assuming that's what you're doing on the guest VM?  That's
essentially not supported. Actions should be performed on the guest VM
via the Nova API, like suspending or stopping the VM.

The _sync_power_states periodic task in the compute manager is
synchronizing the nova database (which thinks the instance was active)
with the hypervisor (which shows the guest as suspended).  So nova
resolves the difference by stopping the instance.

** Tags added: compute

** Changed in: nova
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1553046

Title:
  suspended VMs are shutdown by nova compute

Status in OpenStack Compute (nova):
  Invalid

Bug description:
  version:Kilo (according to the src file ,I think Liberty has the same
  issue)

  Reproduce steps:
  1 launch a VM
  2 sleep the VM (windows:using the arrow button next to the Shut down button on the Start menu.)
  3 wait a while  ( shorter than seconds defined by CONF.sync_power_state_interval)

  
  Expected result:
  VM won't be shutdown. just keeping its' power_state(suspended)
  then it can quickly resume to normal state.

  Actual result:
  the VM was shutdown.  and can't be resumed . need to run "nova start " first.

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