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How can I configure XCP and Nova to communicate with OpenVSwitch?

asked 2013-08-22 03:46:13 -0500

jacky velluet gravatar image

updated 2013-09-05 21:05:00 -0500

I try to lunch an instance but it stops in Spawning state and crash (status : error). I use an .iso in glance. I use XCP - OpenvSwitch with Grizzly. All parts use Ubuntu Server 12.04.1. I can populate XCP of VM thanks to Citrix Xen Center compute is in PV mode / I use a LVM disk for instance (instance is in ext)

I have made the typical install and I have try to adapt the install for XCP-OpenvSwitch

my "nova.conf" is in :

When I create a VM, Nova receives datagrams but not XCP... How must be configured XCP and Nova to communicate with OpenvSwitch ?

In the Controller after try to create a VM I have these errors :

In Nova's scheduler log :

2013-08-22 09:08:57.875 ERROR nova.scheduler.filter_scheduler [req-835fba9d-960c-4ac8-bda4-3bc9c99dc2cc 109a5b02308243a6a3c040c4e1e42d46 d7fdd73480e840f49dd25d0c5f1fb116] [instance: 50e19ac4-9a88-42eb-9dda-4d3bafb6d433] Error from last host: compute (node dom0): [u'Traceback (most recent call last):\n', u'  File "/usr/lib/python2.7/dist-packages/nova/compute/", line 848, in _run_instance\n    set_access_ip=set_access_ip)\n', u'  File "/usr/lib/python2.7/dist-packages/nova/compute/", line 1107, in _spawn\n    LOG.exception(_(\'Instance failed to spawn\'), instance=instance)\n', u'  File "/usr/lib/python2.7/", line 24, in __exit__\n\n', u'  File "/usr/lib/python2.7/dist-packages/nova/compute/", line 1103, in _spawn\n    block_device_info)\n', u'  File "/usr/lib/python2.7/dist-packages/nova/virt/xenapi/", line 177, in spawn\n    admin_password, network_info, block_device_info)\n', u'  File "/usr/lib/python2.7/dist-packages/nova/virt/xenapi/", line 480, in spawn\n    undo_mgr.rollback_and_reraise(msg=msg, instance=instance)\n', u'  File "/usr/lib/python2.7/dist-packages/nova/", line 1250, in rollback_and_reraise\n    self._rollback()\n', u'  File "/usr/lib/python2.7/", line 24, in __exit__\n\n', u'  File "/usr/lib/python2.7/dist-packages/nova/virt/xenapi/", line 466, in spawn\n    kernel_file, ramdisk_file)\n', u'  File "/usr/lib/python2.7/dist-packages/nova/virt/xenapi/", line 142, in inner\n    rv = f(*args, **kwargs)\n', u'  File "/usr/lib/python2.7/dist-packages/nova/virt/xenapi/", line 387, in create_vm_record_step\n    vdis, disk_image_type, kernel_file, ramdisk_file)\n', u'  File "/usr/lib/python2.7/dist-packages/nova/virt/xenapi/", line 538, in _create_vm_record\n    vdis[\'root\'][\'ref\'], disk_image_type, instance[\'os_type\'])\n', u"KeyError: 'root'\n"]
2013-08-22 09:08:57.907 WARNING nova.scheduler.driver [req-835fba9d-960c-4ac8-bda4-3bc9c99dc2cc 109a5b02308243a6a3c040c4e1e42d46 d7fdd73480e840f49dd25d0c5f1fb116] [instance: 50e19ac4-9a88-42eb-9dda-4d3bafb6d433] Setting instance to ERROR state.

root@controller:/var/log/quantum# tail server.log
2013-08-22 09:07:46  WARNING [quantum.db.agentschedulers_db] Fail scheduling network {'status': u'ACTIVE', 'subnets': [u'3161f69b-6dc9-4596-8df8-b5d36100c73b'], 'name': u'test', 'provider:physical_network': None, 'admin_state_up': True, 'tenant_id': u'd7fdd73480e840f49dd25d0c5f1fb116', 'provider:network_type': u'gre', 'router:external': False, 'shared': False, 'id': u'd0954e2f-dd83-41ec-84e5-49c6dce79c7e', 'provider:segmentation_id': 1L}

In the network :

root@network:/var/log/openvswitch# tail ovs-vswitchd.log

Aug 22 06:35:45|00057|vlog|INFO|opened log file ...
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answered 2013-11-12 09:34:16 -0500

Bob Ball gravatar image

The KeyError in the first paste is a bug in Nova - but this has been fixed. Please try with the released version of Havana.

If you want more details on XenServer and networking, check out or if you're trying to set up Neutron.

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Asked: 2013-08-22 03:46:13 -0500

Seen: 240 times

Last updated: Nov 12 '13