openstack team mailing list archive

[Emilien Macchi <emilien.macchi@xxxxxxxxxxxx>]

Thank you for the bug Yaguang !

You've been faster than me ;)


Regards


On Wed, Aug 8, 2012 at 4:16 AM, heut2008 <heut2008@xxxxxxxxx> wrote:

> I have file  a bug https://bugs.launchpad.net/nova/+bug/1034216
> and  upload a patch https://review.openstack.org/#/c/11008/
>
> 2012/8/8 Dan Wendlandt <dan@xxxxxxxxxx>
>
>>  Hi Emilien,
>>
>> I know of customers using virtio with Quantum, but I think they may have
>> modified the template directly, as you mention below.
>>
>> This code in nova changed quite a bit from Essex -> Folsom.  Looking at
>> nova/virt/libvirt/vif.py, I noticed that whoever added the
>> libvirt_use_virtio_for_bridges flag did not add it to the
>> LibvirtOpenVswitchDriver class.  Based on the XML you show below, my guess
>> would be that if you add the following lines prior to the return statement
>> of the plug() method of that class, you would get the right XML:
>>
>> if FLAGS.libvirt_use_virtio_for_bridges:
>>       conf.model = "virtio"
>>
>> That said, I haven't tested it.
>>
>> Can you file a bug on this in nova?  Thanks,
>>
>> Dan
>>
>>
>> On Tue, Aug 7, 2012 at 2:57 PM, Emilien Macchi <
>> emilien.macchi@xxxxxxxxxxxx> wrote:
>>
>>> Hi Stackers,
>>>
>>>
>>> I'm talking with Sebastien Han<http://www.sebastien-han.fr/blog/2012/07/19/make-the-network-of-your-vms-fly-with-virtio-driver>about VirtIO Driver for network interfaces.
>>>
>>> We have two setup :
>>>
>>> 1) Ubuntu 12.04 / Essex / KVM
>>>    network_manager=*nova.network*.manager.*VlanManager*
>>>    libvirt_use_virtio_for_bridges=true
>>>
>>> 2) Ubuntu 12.04 / Essex / KVM
>>>    network_manager=nova.network.quantum.manager.QuantumManager
>>>
>>> linuxnet_interface_driver=nova.network.linux_net.LinuxOVSInterfaceDriver
>>>    libvirt_use_virtio_for_bridges=true
>>>
>>> What we have seen :
>>>
>>> - VMs booting from first setup have VirtIO driver for networking
>>> (Gigabit ready). Here is the libvirt.xml for network part :
>>>
>>> <interface type='bridge'>
>>> (...)
>>>             <model type='virtio'/>
>>> (...)
>>> </interface>
>>>
>>> - VMs booting from second setup (with Quantum) don't use VirtIO driver
>>> (No gigabit). Here is the libvirt.xml for network part :
>>>
>>> <interface type='ethernet'>
>>>             <target dev='tapxxxxx' />
>>>             <mac address='xxxx' />
>>>             <script path='' />
>>>  </interface>
>>>
>>> The only one way I found to use VirtIO driver with Quantum to modify
>>> /usr/share/pyshared/nova/virt/libvirt.xml.template file and add :
>>>
>>> <model type='virtio'/>
>>> (after line 125)
>>>
>>> So you must have something like this :
>>> <interface type='ethernet'>
>>> <target dev='${nic.name}' />
>>> <mac address='${nic.mac_address}' />
>>> <script path='${nic.script}' />
>>> <model type='virtio'/>
>>> </interface>
>>>
>>> And restart LibVirt service :
>>> service libvirt-bin restart
>>>
>>>
>>> What do you think about that ? Should we modify the template to get
>>> Gigabit capacity or is there something wrong in my configuration ?
>>>
>>>
>>> Best regards
>>>
>>> --
>>> Emilien Macchi
>>> *System Engineer*
>>> *www.stackops.com
>>>
>>> | *emilien.macchi@xxxxxxxxxxxx**  *|* skype:emilien.macchi*
>>> * <http://www.stackops.com>
>>> *
>>>
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>>
>>
>> --
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> Dan Wendlandt
>> Nicira, Inc: www.nicira.com
>> twitter: danwendlandt
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>>
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>


-- 
Emilien Macchi
*System Engineer*
*www.stackops.com

| *emilien.macchi@xxxxxxxxxxxx**  *|* skype:emilien.macchi*
* <http://www.stackops.com>
*

*

******************** ADVERTENCIA LEGAL ********************
Le informamos, como destinatario de este mensaje, que el correo electrónico
y las comunicaciones por medio de Internet no permiten asegurar ni
garantizar la confidencialidad de los mensajes transmitidos, así como
tampoco su integridad o su correcta recepción, por lo que STACKOPS
TECHNOLOGIES S.L. no asume responsabilidad alguna por tales circunstancias.
Si no consintiese en la utilización del correo electrónico o de las
comunicaciones vía Internet le rogamos nos lo comunique y ponga en nuestro
conocimiento de manera inmediata. Este mensaje va dirigido, de manera
exclusiva, a su destinatario y contiene información confidencial y sujeta
al secreto profesional, cuya divulgación no está permitida por la ley. En
caso de haber recibido este mensaje por error, le rogamos que, de forma
inmediata, nos lo comunique mediante correo electrónico remitido a nuestra
atención y proceda a su eliminación, así como a la de cualquier documento
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cualquiera que fuera su finalidad, están prohibidas por la ley.

***************** PRIVILEGED AND CONFIDENTIAL ****************
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proper reception of the messages sent and, thus, STACKOPS TECHNOLOGIES S.L.
does not assume any liability for those circumstances. Should you not agree
to the use of e-mail or to communications via Internet, you are kindly
requested to notify us immediately. This message is intended exclusively
for the person to whom it is addressed and contains privileged and
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