Open Stack

Hi George,

Thanks for the detailed response. How has OVS 2 been working for you so
far?

I'm running the 3.5 kernel from Precise (generic-lts-quantal), so hopefully
the kernel module won't be an issue. Not sure why that delay would occur
after boot..



On Sun, Jan 19, 2014 at 3:45 PM, George Shuklin <george.shuklin at gmail.com>wrote:

>  Yes and no.
>
> Yes: I was able to upgrade laboratory cluster from OVS 1.10 to OVS 1.11
> and it performs few orders better under --rand-source DoS attack then OVS
> 1.10-based installation.
> No: there is issues.
>
> Issue #1:
> OVS 1.11 (vanilla version) has datapath (kernel module) with is not
> compilable with linux-3.11 (which is default for ubuntu cloud archive).
> Because canonical was able to build OVS 1.10 against 3.11, I think this is
> possible. Research pending, but right now I stuck with linux-3.8
>
> Issue #2:
> Delayed recovery after reboot. Because of unknown reason (research
> pending) systems under OVS 1.11 behave bit strange after whole system (all
> hosts) reboot. There is a long delay (about 6-10 minutes) before networking
> restore after successful booting of every server and instance start. At
> first I even thought it is broken (uptime 3 minutes - no dhcp for
> instances).
>
> I'll continue to play around ovs 2.0.1 and other questions with
> networking, because deploying OVS 1.10 to production environment is some
> kind of slow suicide. Any script kiddie with hping and just 15 Mbit channel
> will able to completely shutoff networking node (>90% packet loss), and
> just about 5Mbit/s of --rand-source flood is enough to cripple it (>5%
> packet loss).
>
>
> On 01/18/2014 04:24 PM, Jacob Godin wrote:
>
> Hi George,
>
> To clarify, you were able to upgrade from 1.10 or install 1.11 fresh
> without any issues?
>
> Sent from my mobile device
> On Jan 17, 2014 4:56 PM, "George Shuklin" <george.shuklin at gmail.com>
> wrote:
>
>>  For 1.11 I was wrong, it working fine.
>>
>> For 2.0.1 something is broken, but I still can't get where. VMs can ping
>> each other within host (if configured manually), but traffic is not getting
>> out br-tun (no GRE, no DHCP from network node).
>>
>> On 01/16/14 18:11, Aaron Rosen wrote:
>>
>> Hi,
>>
>> Can you give more details on how it breaks? Did you restart the agents so
>> it reprograms the flows back down?
>> On Jan 16, 2014 2:06 AM, "George Shuklin" <george.shuklin at gmail.com>
>> wrote:
>>
>>> Good day.
>>>
>>> Did anyone successfully combine havanna and OVS > 1.10? OVS 1.10 is
>>> really suck under specific types of load (was fixed in OVS 1.11 and later).
>>> But plain upgrade of OVS breaks neutron (under research).
>>>
>>> Did anyone walk that path?
>>>
>>> Thanks.
>>>
>>> _______________________________________________
>>> OpenStack-operators mailing list
>>> OpenStack-operators at lists.openstack.org
>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>>>
>>
>>
>> _______________________________________________
>> OpenStack-operators mailing list
>> OpenStack-operators at lists.openstack.org
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-operators/attachments/20140123/f10734b4/attachment.html>