Re: DPDK 20.11/CentOS7.9, first run -> *FAILED*

[David Marchand <david.marchand@redhat.com>]

On Thu, Oct 14, 2021 at 1:37 PM Ruslan R. Laishev <zator@yandex.ru> wrote:
>   Since
> http://doc.dpdk.org/guides-16.04/linux_gsg/quick_start.html#linux-setup-script

I am surprised to see you are using a 16.04 version.

I recommend using the latest LTS, i.e. 20.11.
For this version, the quick start guide is
https://doc.dpdk.org/guides-20.11/linux_gsg/index.html


>   refer to nonexistent SETUP.SH, i walking over the docs an do steps to
> unsure that DPDK is working at all after installation.
>
>   So:
>
>
> [root@sysman ~]# sudo modprobe uio_pci_generic
> [ 1084.673269] Generic UIO driver for PCI 2.3 devices version: 0.01.0
>
> [root@sysman ~]# sudo modprobe vfio-pci
> [ 1118.429157] VFIO - User Level meta-driver version: 0.3
>
> [root@sysman ~]# dpdk-devbind.py  -s
>
> Network devices using kernel driver
> ===================================
> 0000:02:01.0 '82545EM Gigabit Ethernet Controller (Copper) 100f'
> if=ens33 drv=e1000 unused=vfio-pci,uio_pci_generic *Active*
> 0000:02:05.0 '82545EM Gigabit Ethernet Controller (Copper) 100f'
> if=ens37 drv=e1000 unused=vfio-pci,uio_pci_generic
> 0000:02:06.0 '82545EM Gigabit Ethernet Controller (Copper) 100f'
> if=ens38 drv=e1000 unused=vfio-pci,uio_pci_generic
>
> [root@sysman ~]# dpdk-devbind.py  --bind=vfio-pci  ens37
> Error: bind failed for 0000:02:05.0 - Cannot bind to driver vfio-pci
> Error: unbind failed for 0000:02:05.0 - Cannot open
> /sys/bus/pci/drivers//unbind
>
> [ 1215.157980] vfio-pci: probe of 0000:02:05.0 failed with error -22
> [ 1215.164317] vfio-pci: probe of 0000:02:05.0 failed with error -22

If your server has a iommu, you probably did not configure it.
If you don't have such hw, you need no-iommu support.

https://doc.dpdk.org/guides-20.11/linux_gsg/linux_drivers.html#troubleshooting-vfio


-- 
David Marchand