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[Bug 1413475] [NEW] cannot get aggregate metadata information when nova-compute starts using xen

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Public bug reported:

If the host added using aggregate to slave host in Xenserver
environments,

nova-compute does not start because cannot get aggregate metadata
information.

nova-compute trying to call xenapi's _join_slave method to get host
information,

then db query api called by aggregate_get_by_host function and returns
the aggregate object.

Finally, xenapi's client session object returns the aggregate's
metadetails but the aggregate object does not have

metadetails information.

I think we should use "metadata" instead "metadetails'.

The error messages are below.

2015-01-21 07:40:35.308 2473 CRITICAL nova [req-c98c0fb9-7b47-4100-81c7-a6061410b680 None None] AttributeError: 'Aggregate' object has no attribute 'metadetails'
2015-01-21 07:40:35.308 2473 TRACE nova Traceback (most recent call last):
2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/bin/nova-compute", line 10, in <module>
2015-01-21 07:40:35.308 2473 TRACE nova     sys.exit(main())
2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/cmd/compute.py", line 72, in main
2015-01-21 07:40:35.308 2473 TRACE nova     db_allowed=CONF.conductor.use_local)
2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/service.py", line 274, in create
2015-01-21 07:40:35.308 2473 TRACE nova     db_allowed=db_allowed)
2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/service.py", line 147, in __init__
2015-01-21 07:40:35.308 2473 TRACE nova     self.manager = manager_class(host=self.host, *args, **kwargs)
2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 605, in __init__
2015-01-21 07:40:35.308 2473 TRACE nova     self.driver = driver.load_compute_driver(self.virtapi, compute_driver)
2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/virt/driver.py", line 1300, in load_compute_driver
2015-01-21 07:40:35.308 2473 TRACE nova     virtapi)
2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/openstack/common/importutils.py", line 50, in import_object_ns
2015-01-21 07:40:35.308 2473 TRACE nova     return import_class(import_value)(*args, **kwargs)
2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/virt/xenapi/driver.py", line 156, in __init__
2015-01-21 07:40:35.308 2473 TRACE nova     self._session = session.XenAPISession(url, username, password)
2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/virt/xenapi/client/session.py", line 87, in __init__
2015-01-21 07:40:35.308 2473 TRACE nova     self.host_uuid = self._get_host_uuid()
2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/virt/xenapi/client/session.py", line 143, in _get_host_uuid
2015-01-21 07:40:35.308 2473 TRACE nova     return aggr.metadetails[CONF.host]
2015-01-21 07:40:35.308 2473 TRACE nova AttributeError: 'Aggregate' object has no attribute 'metadetails'
2015-01-21 07:40:35.308 2473 TRACE nova

** Affects: nova
     Importance: Undecided
     Assignee: kwonho lee (lkhysy)
         Status: New

** Changed in: nova
     Assignee: (unassigned) => kwonho lee (lkhysy)

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https://bugs.launchpad.net/bugs/1413475

Title:
  cannot get aggregate metadata information when nova-compute starts
  using xen

Status in OpenStack Compute (Nova):
  New

Bug description:
  If the host added using aggregate to slave host in Xenserver
  environments,

  nova-compute does not start because cannot get aggregate metadata
  information.

  nova-compute trying to call xenapi's _join_slave method to get host
  information,

  then db query api called by aggregate_get_by_host function and returns
  the aggregate object.

  Finally, xenapi's client session object returns the aggregate's
  metadetails but the aggregate object does not have

  metadetails information.

  I think we should use "metadata" instead "metadetails'.

  The error messages are below.

  2015-01-21 07:40:35.308 2473 CRITICAL nova [req-c98c0fb9-7b47-4100-81c7-a6061410b680 None None] AttributeError: 'Aggregate' object has no attribute 'metadetails'
  2015-01-21 07:40:35.308 2473 TRACE nova Traceback (most recent call last):
  2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/bin/nova-compute", line 10, in <module>
  2015-01-21 07:40:35.308 2473 TRACE nova     sys.exit(main())
  2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/cmd/compute.py", line 72, in main
  2015-01-21 07:40:35.308 2473 TRACE nova     db_allowed=CONF.conductor.use_local)
  2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/service.py", line 274, in create
  2015-01-21 07:40:35.308 2473 TRACE nova     db_allowed=db_allowed)
  2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/service.py", line 147, in __init__
  2015-01-21 07:40:35.308 2473 TRACE nova     self.manager = manager_class(host=self.host, *args, **kwargs)
  2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 605, in __init__
  2015-01-21 07:40:35.308 2473 TRACE nova     self.driver = driver.load_compute_driver(self.virtapi, compute_driver)
  2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/virt/driver.py", line 1300, in load_compute_driver
  2015-01-21 07:40:35.308 2473 TRACE nova     virtapi)
  2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/openstack/common/importutils.py", line 50, in import_object_ns
  2015-01-21 07:40:35.308 2473 TRACE nova     return import_class(import_value)(*args, **kwargs)
  2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/virt/xenapi/driver.py", line 156, in __init__
  2015-01-21 07:40:35.308 2473 TRACE nova     self._session = session.XenAPISession(url, username, password)
  2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/virt/xenapi/client/session.py", line 87, in __init__
  2015-01-21 07:40:35.308 2473 TRACE nova     self.host_uuid = self._get_host_uuid()
  2015-01-21 07:40:35.308 2473 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/virt/xenapi/client/session.py", line 143, in _get_host_uuid
  2015-01-21 07:40:35.308 2473 TRACE nova     return aggr.metadetails[CONF.host]
  2015-01-21 07:40:35.308 2473 TRACE nova AttributeError: 'Aggregate' object has no attribute 'metadetails'
  2015-01-21 07:40:35.308 2473 TRACE nova

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