[HOW TO: Using SR-IOV in UnRAID with 1Gb/10Gb/40Gb network interface cards (NICs)]

On 2/28/2021 at 1:57 PM, BVD said:

Via terminal, just type the following command, substituting 'eth1' for whichever interface you're planning to set up:

sudo echo 4 > /sys/class/net/eth1/device/sriov_numvfs

... That's it... no reboots, no config file changes, just bind the vfs with the scipt and no downtime, which is pretty spectactular; you now have 4 vfs (virtual functions) and one pf (physical function).

 

Like the idea of no reboot configure!

 

But the reality is that somehow this sriov_numvfs file cannot be changed on my machine.

 

I tried ssh with root and run your command echoing the number in, and it shows "echo: write error: No such file or directory"

 

I then tried nano it, when save, it says "Error writing... No such file or directory".

 

I was trying to virtualize my iGPU (Intel 12600K, Asrock Z690), so my file path was  /sys/class/graphics/fb0/device/sriov_numvfs

 

Do you have an idea why this is happening?