Gigabyte Z97-D3H+Intel X520-SR2 fail to enable VFs

[XSun10]

Hi, I try to create VFs with Intel X520-SR2 on Gigabyte Z97-D3H.

I enable Intel Virualization Technology and VT-d in BIOS setting and add boot parameter "intel_iommu=on".

I use PF driver (ixgbe driver version: 4.0.3) and VF driver (ixgbevf driver version: 2.16.1) on Ubuntu 14.10 with kernel version of 3.16.0.23

After insert ixgbe and ixgbevf module, I fail to see VFs with lspci -n command.

Can anybody help me? Thank you!

[ANDREY_V_Intel1]

Are you enabling VFs on your system?

You should load the driver with sriov_numvfs parameter like this:

echo 4 > /sys/class/net/device name/device/sriov_numvfs

Please refer to the SR-IOV configuration guide for more details: http://www.intel.it/content/dam/www/public/us/en/documents/technology-briefs/xl710-sr-iov-config-guide-gbe-linux-brief.pdf http://www.intel.it/content/dam/www/public/us/en/documents/technology-briefs/xl710-sr-iov-config-guide-gbe-linux-brief.p…

[XSun10]

Hi, Anvanster, thank you for your reply

I did try to enable VFs as you described, echo 4 > /sys/bus/pci/devices/0000\:05\:00.0/sriov_numvfs

but I met the following error in terminal.

write error: cannot allocate memory

Dmesg will show: SR-IOV: bus number out of range.

I tried to add "pci=realloc=on/off" to boot parameters, but still met this error.

[XSun10 · Accepted solution]

Add boot parameter: pci=assign-busses

Then VFs can be seen.

Thank you!

[ychen105]

hi , i'm confused with the same question as you describe ,however i can't create it correctly . could you help with some further instruction? my email is mailto:enwplan001@163.com enwplan001@163.com