Flavio
Thank you again for trying to help me. Luckily I've solved the problem.
So here I'll just document it for the benefit of other people with the
same problem.
On 10/19/2018 08:12 PM, Flavio Leitner wrote:
> On Mon, Oct 08, 2018 at 11:52:24AM +0200, Andrzej Ostruszka wrote:
[...]
>> ovs-vsctl: Error detected while setting up 'dpdk-p0': Error attaching
>> device '08:00.0' to DPDK. See ovs-vswitchd log for details.
>> ovs-vsctl: The default log directory is "/usr/local/var/log/openvswitch".
>>
>> and in there the confirmation from DPDK:
>>
>> 2018-10-08T09:38:28.234Z|00058|dpdk|ERR|EAL: Cannot find unplugged
>> device (08:00.0)
>> 2018-10-08T09:38:28.234Z|00059|netdev_dpdk|WARN|Error attaching device
>> '08:00.0' to DPDK
>> 2018-10-08T09:38:28.234Z|00060|netdev|WARN|dpdk-p0: could not set
>> configuration (Invalid argument)
The key word in the above log was "unplugged". What actually happened
when I have given PCI address is that OvS tried to attach the driver
when it already has been attached.
So it looks like upon the startup OvS does a scan and attaches the ports
(excerpt from the log):
|INFO|EAL: PCI device 0000:01:00.0 on NUMA socket -1
|WARN|EAL: Invalid NUMA socket, default to 0
|INFO|EAL: probe driver: 15b3:1019 net_mlx5
|INFO|PMD: net_mlx5: PCI information matches, using device "mlx5_0"
(SR-IOV: false)
|INFO|PMD: net_mlx5: 1 port(s) detected
So I've taken a look at the code and saw that OvS takes the dpdk-devargs
and first searches for the port by that name and if not found then it
tries to attach/hotplug using this value. Thus the solution was to
change the value of dpdk-devargs to the name of the port (mlx5_0 and
mlx5_1) instead of PCI address. So with the following config everything
works just fine - I guess the documentation could be updated a bit though.
# ovs-vsctl show
67be421b-d397-4173-b1d5-e7d80f641daa
Bridge "br0"
Port "dpdk-p1"
Interface "dpdk-p1"
type: dpdk
options: {dpdk-devargs="mlx5_1"}
Port "br0"
Interface "br0"
type: internal
Port "dpdk-p0"
Interface "dpdk-p0"
type: dpdk
options: {dpdk-devargs="mlx5_0"}
ovs_version: "2.10.90"
Best regards
Andrzej
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