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

[Liang Chen]

** Description changed:

+ [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.

** Patch added: "trusty nova patch"
   https://bugs.launchpad.net/ubuntu/+source/nova/+bug/1196924/+attachment/4423093/+files/nova-2014.1.4-0ubuntu2.2-lp1196924.patch

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https://bugs.launchpad.net/bugs/1196924

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

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