Pve 6.3 - infiniband error

[carnyx.io]

Hello world,

Usually, i have no problem to install Infiniband on proxmox server for create speed network for Ceph.

But on some Dell Server (C6220, a compact chassis for datacenter), i have a problem with the mlx4_core driver :


mlx4_core 0000:03:00.0: Missing UAR, aborting


The mellanox IB cards that i use are ok on Dell R620, Dell R630 on


I saw the following post on redhat support, but i have no subscription to read it :-(

https://access.redhat.com/solutions/695013

Is anyone has an idea to resolve this problem or simplely give me the content of the redhat post ?

Best regards all

GE

 

[stefanobertoli]

Hi, had same issue on DELL R720.
Actually I'm using Proxmox 7.

After some searching I found this:

https://community.mellanox.com/s/question/0D51T00006RVuXj/mlx4core-missing-uar-aborting

I confirm it solved the issue

for details, I also had to disable acpi, so I report my /etc/default/grub

GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet acpi=off pci=realloc=off"
GRUB_CMDLINE_LINUX=""

remember to execute a #update-grub

 

[colby]

Enabling SR-IOV also solved the issue for me without having to make any grub changes, which is preferred for me. I enabled it in the Chipset features in the motherboard BIOS on my ASRockrack x470 motherboard.