Hello

 

I am trying to enable SR-IOV with the 10Gbps network adapter Intel X550-T1 but haven't got it right.

 

My build is i3-9300T + ASUS ROG STRIX B360-I. I'm on unRAID v6.8.3. 

 

This is what I did:

1. Enable SR-IOV support in BIOS

2. Change main-flash-unraid OS to the following:

            kernel /bzimage
            append pcie_acs_override=downstream intel_iommu=on iommu=pt igb.max_vfs=7 initrd=/bzroot 

3. reboot

 

In system devices, X550T1 is still shown as a single device and no virtual network adapter is present.

 

Is there anything I did wrong?

Found the problem.

 

For people who might encounter this issue in the future, below is the solution:

 

1. X550T1 is not igb but ixgbe so in the command it should be ixgbe.max_vfs=7

2. In dmesg SR-IOV reports some issues like number of busses is out of range. It was reported as a motherboard issue and can be override by pci=assign-busses

 

So finally the command will be:

append pcie_acs_override=downstream intel_iommu=on iommu=pt ixgbe.max_vfs=15 pci=assign-busses initrd=/bzroot