XL-710 Probe Failed error

[Akash_cdot]

Hi, 

In one of our server with Ubuntu 20.04 (Intel(R) Xeon(R) Gold 6150) having XL710 NIC (4x10G), we are trying to bind vfio-pci with dpdk-devbind script.

dpdk-devbind.py -b vfio-pci 0000:d8:00.0

But getting error : vfio-pci: probe of 0000:d8:00.0 failed with error -22

This issue is coming for all the NIC but only on this particular server and persists after boot also. Binding process, make that particular PCI bus as unusable even for Linux Kernel Driver (i40e)

The linux kernel image is generic : 5.4.0-172-generic.

Thanks

[Dineshbabu]

Hello Akash_cdot,

Thank you for posting in the Intel Community.

Please provide the server model that you are using.

Confirm the purpose of the script that you are running on the server.

Regards,

Dinesh

[Akash_cdot]

Hi Dinesh,

The Server Model number is Dell R740. We are trying to experiment with one of our applications which is DPDK-based. We are trying to bind the XL710 NIC Port with vfio-pci driver.

Thanks

Akash Bhatnagar

[Dineshbabu]

Hello Akash_cdot,

Greetings!

Please confirm if the DPDK script is provided by DELL.

Regards,

Dinesh

[Akash_cdot]

Hi Dinesh, It is the standard dpdk-devbind script installed from DPDK 20.11.8 Release. The same is working on other servers we have.

Thanks

Akash Bhatnagar

[Dineshbabu]

Hello Akash_cdot,

Please allow us some time to review the details and we will get back with an update shortly.

Regards,

Dinesh

[IntelSupport]

Hello Akash,

Greetings for the day!

Thankyou for yor patience.

Can you please verify whether VFIO module is loaded into the kernel ?

Regards,

Varsha

[Akash_cdot]

Hi Varsha, It is built in the Standard generic kernel  5.4.0-172-generic for Ubuntu 20.04. No kernel module is loaded.

Thanks

[Sreelakshmi1]

Hello Akash,

Greetings for the day!

Thank you for your response. We will check the details and keep you posted.

Regards,

Sree

[IntelSupport]

Hello Akash,

Greetings for the day!

Thankyou for your information.

Please refer below link for supported environment for your refernce:

https://doc.dpdk.org/guides-18.05/nics/intel_vf.html

Please let us know if this information is helpful for further action.

Regards,

Varsha

[IntelSupport]

Hello Akash,

Greetings for the day!

I hope this message finds you well.

We are following up to find out if you were able to find the information we provided. 

Kindly reply back to confirm and let us know if you need any further assistance.

Regards,

Varsha

[Varsha11]

Hello Akash,

Greetings for the day!

I hope this message finds you well.

We are following up to find out if you were able to find the information we provided. 

Kindly reply back to confirm and let us know if you need any further assistance.

Regards,

Varsha

[Simon-Intel]

Hi Akash_cdot,

Greetings for the day!

We would like to inform you that we are closing this request as no response has been received from our previous follow-ups. 

Please don't hesitate to ask any further questions in the future. Feel free to start a new conversation, as this thread will no longer be monitored.

Regards,

Simon