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I don't quite follow your question, nova-compute should run in the VM host
(dom0), not in the guest VM (domU), right? Otherwise how could nova-compute
have access to all dom0 privileges to start and manipulate vms?

This is my nova.conf:

--dhcpbridge_flagfile=/etc/nova/nova.conf
--dhcpbridge=/usr/bin/nova-dhcpbridge
--logdir=/var/log/nova
--state_path=/var/lib/nova
--lock_path=/var/lock/nova
--verbose
--s3_host=10.0.254.9
--rabbit_host=10.0.254.9
--cc_host=10.0.254.9
--ec2_url=http://10.0.254.9:8773/services/Cloud
--sql_connection=mysql://novadbadmin:root@10.0.254.9/nova
--network_manager=nova.network.manager.FlatDHCPManager
--network_host=10.0.254.9
--flat_network_bridge=xenbr0
--libvirt_type=xen
--xenapi_remap_vbd_dev=true
--glance_api_servers=10.0.254.9:9292
--image_service=nova.image.glance.GlanceImageService
--nouse_cow_images

Em 11 de janeiro de 2012 12:06, jeffrey coho
<jeffreycohobupt at gmail.com>escreveu:

> Hi,
>    where did u install ur nova-compute? u should put it on a domU(PV
> mode). what's more,
> can u screenshot ur nova.conf here plz?
>
>
> 2012/1/11 Rogério Vinhal Nunes <rogervn at dcc.ufmg.br>
>
>> I've installed nova-compute along with xen and libvirt in a fresh Ubuntu
>> 11.10 install. But I'm experiencing some problems to get it running.
>>
>> nova-compute service fails to start and nova-compute.log shows this error
>> message:
>>
>> 2011-12-26 09:36:03,679 CRITICAL nova [-] [Errno 2] No such file or
>> directory: '/var/lib/nova/instances/Domain-0/console.ring'
>> (nova): TRACE: Traceback (most recent call last):
>> (nova): TRACE: File "/usr/bin/nova-compute", line 49, in <module>
>> (nova): TRACE: service.wait()
>> (nova): TRACE: File "/usr/lib/python2.7/dist-packages/nova/service.py",
>> line 357, in wait
>> (nova): TRACE: _launcher.wait()
>> (nova): TRACE: File "/usr/lib/python2.7/dist-packages/nova/service.py",
>> line 107, in wait
>> (nova): TRACE: service.wait()
>> (nova): TRACE: File
>> "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 166, in
>> wait
>> (nova): TRACE: return self._exit_event.wait()
>> (nova): TRACE: File "/usr/lib/python2.7/dist-packages/eventlet/event.py",
>> line 116, in wait
>> (nova): TRACE: return hubs.get_hub().switch()
>> (nova): TRACE: File
>> "/usr/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 177, in switch
>> (nova): TRACE: return self.greenlet.switch()
>> (nova): TRACE: File
>> "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 192, in
>> main
>> (nova): TRACE: result = function(*args, **kwargs)
>> (nova): TRACE: File "/usr/lib/python2.7/dist-packages/nova/service.py",
>> line 77, in run_server
>> (nova): TRACE: server.start()
>> (nova): TRACE: File "/usr/lib/python2.7/dist-packages/nova/service.py",
>> line 137, in start
>> (nova): TRACE: self.manager.init_host()
>> (nova): TRACE: File
>> "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 157, in
>> init_host
>> (nova): TRACE: self.driver.init_host(host=self.host)
>> (nova): TRACE: File
>> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/connection.py", line
>> 253, in init_host
>> (nova): TRACE: self._start_console_logger(name, fifo_path,
>> ringbuffer_path)
>> (nova): TRACE: File
>> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/connection.py", line
>> 297, in _start_console_logger
>> (nova): TRACE: self.console_loggers[name] = ConsoleLogger(fifo_path,
>> ringbuffer_path)
>> (nova): TRACE: File
>> "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/connection.py", line
>> 186, in __init__
>> (nova): TRACE: FLAGS.libvirt_console_log_size)
>> (nova): TRACE: File "/usr/lib/python2.7/dist-packages/nova/utils.py",
>> line 932, in __init__
>> (nova): TRACE: self.f = self._open(backing_file)
>> (nova): TRACE: File "/usr/lib/python2.7/dist-packages/nova/utils.py",
>> line 970, in _open
>> (nova): TRACE: fd = os.open(filename, os.O_RDWR | os.O_CREAT, 0666)
>> (nova): TRACE: OSError: [Errno 2] No such file or directory:
>> '/var/lib/nova/instances/Domain-0/console.ring'
>>
>> Is there anything else I need to do to make Diablo work with Xen? It
>> seems that openstack is considering Domain-0 an instance. I have a Ubuntu
>> 10.04 configuration that works fine, I've found out that in this
>> configuration "virsh list" doesn't show Domain-0, so that may be the
>> problem. But for libvirt showing the Domain-0 vm seems like the correct
>> behaviour, nova-compute is the one that should ignore it.
>>
>> I've filed a bug ( https://bugs.launchpad.net/bugs/912701 ) and also a
>> question ( https://answers.launchpad.net/nova/+question/182917 ), but
>> I've got no answer yet. This is pretty critical, is there something I can
>> do to workaround it? I would want to avoid using xenapi directly.
>>
>> _______________________________________________
>> Mailing list: https://launchpad.net/~openstack
>> Post to     : openstack at lists.launchpad.net
>> Unsubscribe : https://launchpad.net/~openstack
>> More help   : https://help.launchpad.net/ListHelp
>>
>>
>
>
> --
> Sincerely yours,
> Jeff
>
>
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