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[ChenZheng <czheng@xxxxxxxxxx>]

Public bug reported:

1. Set the nova.conf scheduler_default_filters=AggregateInstanceExtraSpecsFilter,AvailabilityZoneFilter,RamFilter,ComputeFilter and restart compute, scheduler service
2. Create an aggregate and add a host to it with metadata test_meta=1
3. Modify exist flavor to add the same key:value test_meta=1
4. Boot an instance with this specific flavor and came across 
| fault                                | {u'message': u'NV-67B7376 No valid host was found. ', u'code': 500, u'details': u'  File "/usr/lib/python2.6/site-packages/nova/scheduler/filter_scheduler.py", line 107, in schedule_run_instance |
|                                      |     raise exception.NoValidHost(reason="")

The related feature lies here
http://docs.openstack.org/grizzly/openstack-compute/admin/content//host-aggregates.html

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1265466

Title:
  Nova boot fail and raise NoValidHost when use specific aggregate

Status in OpenStack Compute (Nova):
  New

Bug description:
  1. Set the nova.conf scheduler_default_filters=AggregateInstanceExtraSpecsFilter,AvailabilityZoneFilter,RamFilter,ComputeFilter and restart compute, scheduler service
  2. Create an aggregate and add a host to it with metadata test_meta=1
  3. Modify exist flavor to add the same key:value test_meta=1
  4. Boot an instance with this specific flavor and came across 
  | fault                                | {u'message': u'NV-67B7376 No valid host was found. ', u'code': 500, u'details': u'  File "/usr/lib/python2.6/site-packages/nova/scheduler/filter_scheduler.py", line 107, in schedule_run_instance |
  |                                      |     raise exception.NoValidHost(reason="")

  The related feature lies here
  http://docs.openstack.org/grizzly/openstack-compute/admin/content//host-aggregates.html

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