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[Jay Lau <jay.lau.513@xxxxxxxxx>]

Public bug reported:


Currently, live migration will be failed when using shared instance path with QCOW2 because of 'instance_dir' was not defined.

File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py", line 123, in _do_dispatch
    result = getattr(endpoint, method)(ctxt, **new_args)

  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 410, in decorated_function
    return function(self, context, *args, **kwargs)

  File "/usr/lib/python2.6/site-packages/nova/exception.py", line 88, in wrapped
    payload)

  File "/usr/lib/python2.6/site-packages/nova/openstack/common/excutils.py", line 82, in __exit__
    six.reraise(self.type_, self.value, self.tb)

  File "/usr/lib/python2.6/site-packages/nova/exception.py", line 71, in wrapped
    return f(self, context, *args, **kw)

  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 323, in decorated_function
    kwargs['instance'], e, sys.exc_info())

  File "/usr/lib/python2.6/site-packages/nova/openstack/common/excutils.py", line 82, in __exit__
    six.reraise(self.type_, self.value, self.tb)

  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 311, in decorated_function
    return function(self, context, *args, **kwargs)

  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 4661, in pre_live_migration
    migrate_data)

  File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/driver.py", line 4739, in pre_live_migration
    instance_dir, disk_info)

UnboundLocalError: local variable 'instance_dir' referenced before assignment
 to caller

** Affects: nova
     Importance: Undecided
     Assignee: Jay Lau (jay-lau-513)
         Status: New

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https://bugs.launchpad.net/bugs/1346816

Title:
  live migration failed when using shared instance path with QCOW2

Status in OpenStack Compute (Nova):
  New

Bug description:
  
  Currently, live migration will be failed when using shared instance path with QCOW2 because of 'instance_dir' was not defined.

  File "/usr/lib/python2.6/site-packages/oslo/messaging/rpc/dispatcher.py", line 123, in _do_dispatch
      result = getattr(endpoint, method)(ctxt, **new_args)

    File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 410, in decorated_function
      return function(self, context, *args, **kwargs)

    File "/usr/lib/python2.6/site-packages/nova/exception.py", line 88, in wrapped
      payload)

    File "/usr/lib/python2.6/site-packages/nova/openstack/common/excutils.py", line 82, in __exit__
      six.reraise(self.type_, self.value, self.tb)

    File "/usr/lib/python2.6/site-packages/nova/exception.py", line 71, in wrapped
      return f(self, context, *args, **kw)

    File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 323, in decorated_function
      kwargs['instance'], e, sys.exc_info())

    File "/usr/lib/python2.6/site-packages/nova/openstack/common/excutils.py", line 82, in __exit__
      six.reraise(self.type_, self.value, self.tb)

    File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 311, in decorated_function
      return function(self, context, *args, **kwargs)

    File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 4661, in pre_live_migration
      migrate_data)

    File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/driver.py", line 4739, in pre_live_migration
      instance_dir, disk_info)

  UnboundLocalError: local variable 'instance_dir' referenced before assignment
   to caller

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