OpenvSwitch with DPDK isn't working with VirIO (Proposed Repo enabled)

[Christian Ehrhardt]

Very interesting, thanks for the report - continuing on the bug with the
discussion ...

Note: I'll be very busy this week. It woudl be great if you could you share
your crash with the DPDK and OVS-Dev lists (and keep me on CC) to see if
this is a known issue?
Happened quite a few times in the past when I hunted down bugs and it would
help me to help faster once I get to it.

Christian Ehrhardt
Software Engineer, Ubuntu Server
Canonical Ltd

On Sun, May 1, 2016 at 6:42 AM, Martinx - ジェームズ <thiagocmartinsc at gmail.com>
wrote:

> Cool! Thank you for taking time to reply for me during your flight...   =)
>
> One more bug report for you!
>
> https://bugs.launchpad.net/ubuntu/+source/openvswitch/+bug/1577088
>
> I am crashing the OVS+DPDK running at the host, from inside of a KVM Guest
> running another OVS+DPDK!
>
> Cheers!
> Thiago
>
> On 30 April 2016 at 18:17, Christian Ehrhardt <
> christian.ehrhardt at canonical.com> wrote:
>
>> Hi Thiago,
>> Writing on the cellphone at the airport so I hope autocorrect doesn't
>> kill me ;-)
>>
>> Fine that you got it working, but for whoever else that might find the
>> thread. It was a bug that you could use virtue devices without unassigning
>> them from the kernel first.
>>
>> The new conffiles talk about it, also the changelog as well as the
>> updated server-side - the last one takes a few more days to update
>> externally.
>>
>> The behaviour in that part now matches DPDK 16.04 which had the fix.
>> Am 29.04.2016 20:37 schrieb "Martinx - ジェームズ" <thiagocmartinsc at gmail.com
>> >:
>>
>>> Never mind, it is working now... Doing more tests... Have a nice weekend!
>>>
>>> On 29 April 2016 at 21:40, Martinx - ジェームズ <thiagocmartinsc at gmail.com>
>>> wrote:
>>>
>>>> Guys, Christian,
>>>>
>>>>  After upgrading DPDK to "2.2.0-0ubuntu8", OpenvSwitch with DPDK is not
>>>> starting up anymore within a KVM Guest.
>>>>
>>>>  Here is what I have in my Xenial KVM Guest:
>>>>
>>>> ---
>>>> root at template-1:~# dpdk_nic_bind --status
>>>>
>>>> Network devices using DPDK-compatible driver
>>>> ============================================
>>>> 0000:00:05.0 'Virtio network device' drv=uio_pci_generic unused=
>>>> 0000:00:06.0 'Virtio network device' drv=uio_pci_generic unused=
>>>>
>>>> Network devices using kernel driver
>>>> ===================================
>>>> 0000:00:03.0 'Virtio network device' if= drv=virtio-pci
>>>> unused=uio_pci_generic
>>>> 0000:00:04.0 'Virtio network device' if= drv=virtio-pci
>>>> unused=uio_pci_generic
>>>> ---
>>>>
>>>> apt install openvswitch-switch-dpdk
>>>>
>>>> update-alternatives --set ovs-vswitchd
>>>> /usr/lib/openvswitch-switch-dpdk/ovs-vswitchd-dpdk
>>>>
>>>> file "/etc/default/openvswitch-switch" contains:
>>>>
>>>> -
>>>> DPDK_OPTS='--dpdk -c 0x1 -n 4 -m 1024'
>>>> -
>>>>
>>>>  However, after running:
>>>>
>>>> service openvswitch-switch restart
>>>>
>>>>  There is no "ovs-vswit... --dpdk -c 0x1 -n 4 -m 1024" process!
>>>>
>>>>  It was behaving differently before... I'll try rebuild it, or try to
>>>> use l2fwd DPDK App to test this VM...
>>>>
>>>>  Any clue?
>>>>
>>>> Cheers!
>>>> Thiago
>>>>
>>>
>>>
>
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