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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: nova
       Status: Fix Committed => Fix Released

** Changed in: nova
    Milestone: None => grizzly-3

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https://bugs.launchpad.net/bugs/1064581

Title:
  instance destroy causes libvirtError: Unable to read from monitor

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  I'm seeing the following stack trace occur frequently in Nova
  compute.log when running test suites. The exception seems to occur
  when instances are terminated. I've seen it both on SmokeStack and
  again today it happened to me when running the latest Grizzly trunk
  code manually to investigate the issue further (Git Hash 36b8525).

  2012-10-09 13:24:56 AUDIT nova.compute.manager [req-4909f79a-f35a-4590-88fc-5a94ad6fc9fc aff1b54efbbf4a56b88d6d92790190d0 df64b634751947d5b0fbd813f813d5e7] [instance: 5420df8c-b1ad-4373-bc6f-c2088325ad89] Terminating instance
  2012-10-09 13:25:00 ERROR nova.manager [-] Error during ComputeManager.update_available_resource: Unable to read from monitor: Connection reset by peer
  2012-10-09 13:25:00 TRACE nova.manager Traceback (most recent call last):
  2012-10-09 13:25:00 TRACE nova.manager   File "/usr/lib/python2.7/site-packages/nova/manager.py", line 175, in periodic_tasks
  2012-10-09 13:25:00 TRACE nova.manager     task(self, context)
  2012-10-09 13:25:00 TRACE nova.manager   File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2804, in update_available_resource
  2012-10-09 13:25:00 TRACE nova.manager     self.resource_tracker.update_available_resource(context)
  2012-10-09 13:25:00 TRACE nova.manager   File "/usr/lib/python2.7/site-packages/nova/utils.py", line 760, in inner
  2012-10-09 13:25:00 TRACE nova.manager     retval = f(*args, **kwargs)
  2012-10-09 13:25:00 TRACE nova.manager   File "/usr/lib/python2.7/site-packages/nova/compute/resource_tracker.py", line 390, in update_available_resource
  2012-10-09 13:25:00 TRACE nova.manager     resources = self.driver.get_available_resource()
  2012-10-09 13:25:00 TRACE nova.manager   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 2220, in get_available_resource
  2012-10-09 13:25:00 TRACE nova.manager     'disk_available_least': self.get_disk_available_least()}
  2012-10-09 13:25:00 TRACE nova.manager   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 2712, in get_disk_available_least
  2012-10-09 13:25:00 TRACE nova.manager     self.get_instance_disk_info(i_name))
  2012-10-09 13:25:00 TRACE nova.manager   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 2659, in get_instance_disk_info
  2012-10-09 13:25:00 TRACE nova.manager     xml = virt_dom.XMLDesc(0)
  2012-10-09 13:25:00 TRACE nova.manager   File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 187, in doit
  2012-10-09 13:25:00 TRACE nova.manager     result = proxy_call(self._autowrap, f, *args, **kwargs)
  2012-10-09 13:25:00 TRACE nova.manager   File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 147, in proxy_call
  2012-10-09 13:25:00 TRACE nova.manager     rv = execute(f,*args,**kwargs)
  2012-10-09 13:25:00 TRACE nova.manager   File "/usr/lib/python2.7/site-packages/eventlet/tpool.py", line 76, in tworker
  2012-10-09 13:25:00 TRACE nova.manager     rv = meth(*args,**kwargs)
  2012-10-09 13:25:00 TRACE nova.manager   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 381, in XMLDesc
  2012-10-09 13:25:00 TRACE nova.manager     if ret is None: raise libvirtError ('virDomainGetXMLDesc() failed', dom=self)
  2012-10-09 13:25:00 TRACE nova.manager libvirtError: Unable to read from monitor: Connection reset by peer
  2012-10-09 13:25:00 TRACE nova.manager
  2012-10-09 13:25:00 INFO nova.virt.libvirt.driver [-] [instance: 5420df8c-b1ad-4373-bc6f-c2088325ad89] Instance destroyed successfully.

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