On Thu, Mar 1, 2018 at 11:21 PM, Stefan Assmann <sassm...@redhat.com> wrote: > On 2018-03-01 19:40, Alexander Duyck wrote: >> On Thu, Mar 1, 2018 at 8:12 AM, <p...@codeaurora.org> wrote: >> > + intel-wired-...@lists.osuosl.org >> > >> > >> > On 2018-03-01 21:41, p...@codeaurora.org wrote: >> >> >> >> Hi All, >> >> >> >> I am facing the following issue on kernel 4.14.14. >> >> >> >> Enable SRIOV on Intel x710 card. >> >> echo 32 > /sys/class/net/eth1/device/sriov_numvfs >> >> start net_pool >> >> virsh net-start intel_pool >> >> >> >> case 1) >> >> attach the VF while creatig VM: >> >> virt-install --accelerate --import --disk /home/disk.img --network >> >> network=intel_pool --boot uefi --name poza-guest --os-type linux >> >> --os-variant rhel7 --ram 8000 --vcpus 4 >> >> >> >> case 2) >> >> create VM: >> >> virt-install --accelerate --import --disk /home/disk.img --boot uefi >> >> --name poza-guest --os-type linux --os-variant rhel7 --ram 8000 >> >> --vcpus 4 >> >> attach it: >> >> virsh attach-interface --domain oza-guest --type network --source >> >> intel_pool --target eth1 >> >> >> >> kernel logs: >> >> [44287.825287] i40evf 0000:01:02.0: Unable to send opcode 2 to PF, err >> >> I40E_ERR_QUEUE_EMPTY, aq_err OK >> >> [44287.962640] i40e 0000:01:00.0: VF 0 still in reset. Try again. >> >> error: Failed to attach interface >> >> error: Cannot set interface MAC/vlanid to 52:54:00:e9:f1:b5/0 for >> >> ifname eth1 vf 0: Resource temporarily unavailable >> >> >> >> >> >> The same use case works with following card with the same kernel >> >> version and rootfs. >> >> Ethernet controller: Mellanox Technologies MT27710 Family [ConnectX-4 Lx] >> >> >> >> for details logs please have a look at >> >> https://bugzilla.kernel.org/show_bug.cgi?id=198959 >> >> >> >> Regards, >> >> Oza. >> >> So the first question that jumps to mind is what is the firmware >> version on the PF, ethtool -i should tell you. Are there any issues >> bringing up the PF and getting it to pass traffic? > > There's a patch on Intel-wired-lan titled "i40e: Fix attach VF to VM > issue" which should fix the problem. It's not upstream yet. > > As a workaround you could unload/blacklist the i40evf driver in the > host. > > Stefan
Either that or there should be an sriov_drivers_autoprobe sysfs value for the PF that you can set to 0 and that should prevent the VF drivers from auto-loading. - Alex
