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[HenryShen <shenhui2@xxxxxxxxxx>]

Public bug reported:


	boot an instance via a remote volume created by a specified image ,when the spwan process failed for some reasons , the reschedule process disabled  to  recreate the instance.
	to simulate the spwan process failed, an exception was raised just before the function self.driver.spwan() called by _build_and_run_instance function() in compute/manager.py file.
	then excute "nova boot --flavor 1 --block-device id=my_image_id,source=image,dest=volume,bus=virtio,shutdown=removed,device=/dev/vda,bootindex=0,size=1  --nic net-id=my_net_id",created instance failed.
	cinder list showed that the state of the remote volume is in-use.
 	 It seemed that the reschedule process failed cause the volume wasn't freed.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1355634

Title:
  reschedule error after creating an instance from a remote volume
  failed

Status in OpenStack Compute (Nova):
  New

Bug description:
  
  	boot an instance via a remote volume created by a specified image ,when the spwan process failed for some reasons , the reschedule process disabled  to  recreate the instance.
  	to simulate the spwan process failed, an exception was raised just before the function self.driver.spwan() called by _build_and_run_instance function() in compute/manager.py file.
  	then excute "nova boot --flavor 1 --block-device id=my_image_id,source=image,dest=volume,bus=virtio,shutdown=removed,device=/dev/vda,bootindex=0,size=1  --nic net-id=my_net_id",created instance failed.
  	cinder list showed that the state of the remote volume is in-use.
   	 It seemed that the reschedule process failed cause the volume wasn't freed.

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