How to solve a "FATAL: Module mst_pci not found in directory" ?

Infrastructure & Networking Software And Drivers
#1

Hello,

Since We have installed infiniband on our servers with ConnectX-5 cards, I noticed that each time I upgrade linux, the mst driver returns an error like “FATAL: Module mst_pci not found in directory” which implies that I can’t no longer use the infiniband system until I re-install it.

Here is a fresh example to illustrate that problem on one server:

uname -a

→ Linux kauai 5.4.0-42-generic #46~18.04.1-Ubuntu SMP Fri Jul 10 07:21:24 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

sudo apt-get update & sudo apt-get upgrade

sudo reboot

uname -a

Linux kauai 5.4.0-47-generic #51~18.04.1-Ubuntu SMP Sat Sep 5 14:35:50 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

sudo -s

(root)# opensm &

(root)# /etc/init.d/opensmd start

(root)# mst start

→ “Loading MST PCI modulemodprobe: FATAL: Module mst_pci not found in directory /lib/modules/5.4.0-47-generic”

I should add that the installation of mlnxofed (MLNX_OFED_LINUX-5.1-0.6.6.0:) was made with this command:

sudo ./mlnxofedinstall --enable-opensm --add-kernel-support

Is there another solution to make mlnxofed installation “robust” to the upgrading of ubuntu?

Thank you in advance for any advice.

Regards,

Clément

#2

Hi Clément,

This is expected behavior since every time you install the MLNX_OFED it’s being compiled with the current OS and Kernel modules, if you upgrade the OS/Kernel modules the OFED/OpenSM won’t work with the new modules.

Therefore each time you upgrade the OS/Kernel modules you will need to reinstall MLNX_OFED .

Thanks,

Samer

#3

Hi Samer,

Thank you for your answer. From now on, I won’t upgrade so regularly my ubuntu !

Have a nice week.

Clément