<div dir="ltr">Hi George,<div><br></div><div>Thanks for the detailed response. How has OVS 2 been working for you so far? </div><div><br></div><div>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..</div>
<div><br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Sun, Jan 19, 2014 at 3:45 PM, George Shuklin <span dir="ltr"><<a href="mailto:george.shuklin@gmail.com" target="_blank">george.shuklin@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
Yes and no.<br>
<br>
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.<br>
No: there is issues.<br>
<br>
Issue #1:<br>
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<br>
<br>
Issue #2:<br>
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).<br>
<br>
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).<div><div class="h5"><br>
<br>
<div>On 01/18/2014 04:24 PM, Jacob Godin
wrote:<br>
</div>
<blockquote type="cite">
<p dir="ltr">Hi George,</p>
<p dir="ltr">To clarify, you were able to upgrade from 1.10 or
install 1.11 fresh without any issues?</p>
<p dir="ltr">Sent from my mobile device</p>
<div class="gmail_quote">On Jan 17, 2014 4:56 PM, "George Shuklin"
<<a href="mailto:george.shuklin@gmail.com" target="_blank">george.shuklin@gmail.com</a>>
wrote:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> For 1.11 I was wrong,
it working fine. <br>
<br>
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).<br>
<br>
<div>On 01/16/14 18:11, Aaron Rosen wrote:<br>
</div>
<blockquote type="cite">
<p dir="ltr">Hi,</p>
<p dir="ltr">Can you give more details on how it breaks?
Did you restart the agents so it reprograms the flows
back down? </p>
<div class="gmail_quote">On Jan 16, 2014 2:06 AM, "George
Shuklin" <<a href="mailto:george.shuklin@gmail.com" target="_blank">george.shuklin@gmail.com</a>>
wrote:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Good day.<br>
<br>
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).<br>
<br>
Did anyone walk that path?<br>
<br>
Thanks.<br>
<br>
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