Bug 198959

Summary:	SRIOV on Intel x710 fail to get attached both at VM creation time and VM runtime
Product:	Virtualization	Reporter:	Oza Pawandeep (poza)
Component:	kvm	Assignee:	virtualization_kvm
Status:	NEW ---
Severity:	high
Priority:	P1
Hardware:	ARM
OS:	Linux
Kernel Version:	4.14.14	Subsystem:
Regression:	No	Bisected commit-id:
Attachments:	lcpci output kernel logs

Description Oza Pawandeep 2018-03-01 15:41:12 UTC

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]

Comment 1 Oza Pawandeep 2018-03-01 16:05:17 UTC

Created attachment 274487 [details]
lcpci output

Comment 2 Oza Pawandeep 2018-03-01 16:05:35 UTC

Created attachment 274489 [details]
kernel logs