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[Rui Chen <kiwik.chenrui@xxxxxxxxxx>]

Public bug reported:

Detach volume fails with "Unexpected KeyError" in EC2 interface when I
detach a "attaching" status volume.

The volume with "attaching" status don't contain a
property"instance_uuid", a KeyError will be raised at the following
function.

    def _get_instance_from_volume(self, context, volume):
        if volume['instance_uuid']:
            ......

Attaching volume dict:

{
	'status': u'attaching',
	'volume_type_id': u'None',
	'display_name': None,
	'attach_time': '',
	'availability_zone': u'nova',
	'created_at': u'2014-02-13T16: 50: 53.620080',
	'attach_status': 'detached',
	'display_description': None,
	'volume_metadata': {
		
	},
	'snapshot_id': None,
	'mountpoint': '',
	'id': u'99d118ee-3666-4983-8825-f8c096bccbd1',
	'size': 1
}

** Affects: nova
     Importance: Undecided
     Assignee: Rui Chen (kiwik-chenrui)
         Status: New


** Tags: ec2

** Changed in: nova
     Assignee: (unassigned) => Rui Chen (kiwik-chenrui)

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https://bugs.launchpad.net/bugs/1280532

Title:
  Detach volume fails with "Unexpected KeyError" in EC2 interface.

Status in OpenStack Compute (Nova):
  New

Bug description:
  Detach volume fails with "Unexpected KeyError" in EC2 interface when I
  detach a "attaching" status volume.

  The volume with "attaching" status don't contain a
  property"instance_uuid", a KeyError will be raised at the following
  function.

      def _get_instance_from_volume(self, context, volume):
          if volume['instance_uuid']:
              ......

  Attaching volume dict:

  {
  	'status': u'attaching',
  	'volume_type_id': u'None',
  	'display_name': None,
  	'attach_time': '',
  	'availability_zone': u'nova',
  	'created_at': u'2014-02-13T16: 50: 53.620080',
  	'attach_status': 'detached',
  	'display_description': None,
  	'volume_metadata': {
  		
  	},
  	'snapshot_id': None,
  	'mountpoint': '',
  	'id': u'99d118ee-3666-4983-8825-f8c096bccbd1',
  	'size': 1
  }

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