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List:       openvswitch-discuss
Subject:    [ovs-discuss] failed to put[create][modify]
From:       fiezzi () enter ! it (Federico Iezzi)
Date:       2014-06-30 20:08:54
Message-ID: 34C4FFA0DF24A441A1D2A8814435409CECF84D () Exch2010Mb ! enter ! local
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Hi Jesse,


Here we go, I?m really sorry for this huge delay but I had some trouble.
So I tested all OVS version from 2.1.0 (under advise of Salvatore Orlando) to 2.3, \
all of this with kernel 3.11 to 3.13 and I had the following result. 

With Kernel 3.12 or 3.13 AND OVS 2.1 (datapath come from Kernel) or with OVS 2.2 2.3 \
AND Kernel 3.11 (datapath come from OVS) I have the error ?failed to put? into log. \
During this message I have packet loss and retransmission. With Kernel 3.11 and OVS \
compiled from branch-2.1 I don?t have any issue. The datapath came from OVS.

The following commit means my OVS version, because I compile and generate the DEB \
file from GIT branch:

- OVS 2.1 -> https://github.com/openvswitch/ovs/commit/daded0421c7b746c4ce54b6f79061918ed440edf
                
- OVS 2.2 -> https://github.com/openvswitch/ovs/commit/d90edfa1251b04dea3820af126c18527de2aa12e
                
- OVS 2.3 -> https://github.com/openvswitch/ovs/commit/803485697dd690490395a81685dd547bf38810af


I?m sorry but I didn?t have any time to test OVS 2.0.1 LTS with kernel 3.11.

Also as OS I?m using Ubuntu Server 12.04.4 x64 full upgrade, as Kernel I tested the \
following version:

Kernel 3.11
-http://changelogs.ubuntu.com/changelogs/pool/main/l/linux/linux_3.11.0-19.33/
-http://changelogs.ubuntu.com/changelogs/pool/main/l/linux/linux_3.11.0-24.41/

Kernel 3.13
- http://changelogs.ubuntu.com/changelogs/pool/main/l/linux/linux_3.13.0-27.50/
- http://changelogs.ubuntu.com/changelogs/pool/main/l/linux/linux_3.13.0-29.53/

Kernel 3.12, the vanilla version ?3.12.23? provided by Linus from kernel.org

All my hardware is based on Intel Xeon E5-2620 v2, E5-2630, E5-2650 v2 and E5-2670 \
v2.

The following are my version of the build dependencies 
dpkg -l | grep -E "(debhelper|autoconf|automake|libssl-dev|bzip2|openssl|graphviz|python-all|procps|python-qt4)"


ii  autoconf                           2.68-1ubuntu2                       automatic \
configure script builder ii  automake                           1:1.11.3-1ubuntu2     \
Tool for generating GNU Standards-compliant Makefiles ii  automake1.10                \
1:1.10.3-1ubuntu1                   A tool for generating GNU Standards-compliant \
Makefiles ii  bzip2                              1.0.6-1                             \
high-quality block-sorting file compressor - utilities ii  debhelper                  \
9.20120115ubuntu3                   helper programs for debian/rules ii  dh-apparmor  \
2.7.102-0ubuntu3.9                  AppArmor debhelper routines ii  graphviz          \
2.26.3-10ubuntu1.1                  rich set of graph drawing tools ii  \
libgnutls-openssl27                2.12.14-5ubuntu3.8                  GNU TLS \
library - OpenSSL wrapper ii  libssl-dev                         1.0.1-4ubuntu5.15    \
SSL development libraries, header files and documentation ii  openssl                 \
1.0.1-4ubuntu5.15                   Secure Socket Layer (SSL) binary and related \
cryptographic tools ii  procps                             1:3.2.8-11ubuntu6.3        \
/proc file system utilities ii  python-all                         2.7.3-0ubuntu2.2   \
package depending on all supported Python runtime versions ii  python-openssl         \
0.12-1ubuntu2.1                     Python wrapper around the OpenSSL library ii  \
python-qt4                         4.9.1-2ubuntu1                      Python \
bindings for Qt4

As Ethernet NIC I?m using Mellanox Connect X-3 EN Pro and only EN 10 and 40/56Gbps \
with latest OFED and Firmware. As Ethernet Switch I?m using Mellanox SX1024 with a \
special OS and Firmware version.

During the issue I don?t any problem in my internal network communication (ICMP, \
ICMPv6, TCP and UDP). 

If you need more detail please tell me.
If you think to be found a workaround or a probable solution tell me and I?ll try to \
provide some test nodes.

Regards,
Federico






Il giorno 27/giu/2014, alle ore 18:23, Jesse Gross <jesse at nicira.com> ha scritto:

On Thu, Jun 26, 2014 at 12:33 PM, Federico Iezzi <fiezzi at enter.it> wrote:

Eugene,



The only way that I found is roll-back to a Kernel version < 3.12.

Today I did many tests with vanilla Kernel 3.11.10 and Canonical 3.11.0-24 I haven't \
anymore problem using datapath from OVS source. I?m using VXLAN so I can?t test OVS \
with kernel module because only from kernel 3.12 there is VXLAN tunnel support. At \
the beginning  I said that I had the problem with kernel 3.11 and OVS datapath from \
source but this consideration come from a wrong analysis. ** My fault, sorry guys! **

> From my tests during the message ?failed to put? I have packet loss.



Tomorrow I going to test the latest OVS LTS 2.0.1 with Kernel >=3.12 but I'm pretty \
sure that I will have the same problem.




My guess is that this is related only to the OVS datapath and not the

rest of the running kernel since flow parsing doesn't really have any

interaction with the rest of the network stack. It sounds like it also

it's not impacted by userspace version since it sounds like you have

tested several versions with the same results.



Can you clarify exactly which OVS kernel versions you have tested and

the results? It would also be helpful if you can hold other factors

constant as it is a little bit hard to follow what is going on.


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