[ovs-discuss] Unable to make Netflow v5 working

[Duy Bach Ha]

Dear Ben,

I'm sorry for now I have so many kernel versions and 3 gcc that I cannot 
remember at what version and gcc didI have it. But I will try to 
reproduce the crash. How can I have a backtraceso that I can provide it 
for you?

Actually on kernel 3.11.0 or 3.11.10 and some other, and on ubuntu 12.04 
or 14.04, I have built a lot of time and the result was not very nice. 
There's often 2 type of crashes that I get after many build, both with 
2.1.2 and 2.1.1.
- 1 crash is when the switch connect to controller, all switch crashed 
without coming back.
- The other type is after netflow installation, but this one the switch 
keep coming back and crash again.

I really hope I can provide thenecessary information to youon this, 
since it make me crazy.

With that, after I fall back to version 2.0.1 provided by the 
repository, everything is back to normal. Kernel module automatically 
compiledat the installation from repository. Amazingly, the kernelmodule 
accepts even kernel 3.11 against the FAQ, which is 3.10 at max. I then 
try to be at 3.13 and there's an error that it doesn't acceptthis 
kernel. So this I don't understand. But my netflow is still not 
providing flow information, no error show up.

Regards,
Duy
On 08/01/2014 03:25 AM, Ben Pfaff wrote:
> On Tue, Jul 29, 2014 at 05:10:49PM +0200, Duy Bach Ha wrote:
>> Just to sum up and ask for help since I'm doing a thesis and have
>> stuck here for a long time. You guys don't have to follow the other
>> 2 emails because I sum all here. Sincerely thanks for your support.
>>
>> Experimental mininet 2.1.0 network of 6 ovs switches 2.1.2 and some
>> hosts (with ip in 192.168.1.0/24) and try to deploy Netflow on the
>> switches. The controller is opendaylight.
>>
>> /sudo mn --switch ovsk --controller remote --custom
>> /smile/ncstestmap.py --topo ncstestmap --arp/
>> /sh ovs-vsctl -- set Bridge s1 netflow=@nf -- --id=@nf create
>> NetFlow targets=\"192.168.1.2:5566\" active-timeout=10/
>>
>> Try ping, udp client and server, but netflow is not working. I
>> installed from apt-get so most likely I'm working in userspace mode.
>> I tried compiling kernel module, but the switch crashes when I
>> install netflow command. (ovs-vswitchd crashed with SIGSEGV in
>> xlate_actions_() ). I ran the testsuites before install and all
>> tests are successful.
> Can you provide a backtrace?  I'd like to fix the crash.

-- 
-------------------
Bach Ha Duy
INFOTECH Master Program
University of Stuttgart, Germany
Filderbahnplatz 31, 70567 Stuttgart/Mohringen
Flat 01 Room No. 03
0152 59757763

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