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[libvirt-users] About the vfio error when using SR-IOV



Hi, All

I want to use the SR-IOV of intel 82576 NIC.

I enabled IOMMU and VT-d and SR-IOV in BIOS.
And enabled VT-d in kernel.
The OS information is bellow:
[root host3 nova]# cat /etc/redhat-release 
CentOS Linux release 7.1.1503 (Core) 
[root host3 nova]# uname -an
Linux host3.localdomain 3.10.0-229.el7.x86_64 #1 SMP Fri Mar 6 11:36:42 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
[root host3 nova]# rpm -qa|grep qemu
libvirt-daemon-driver-qemu-1.2.8-16.el7.x86_64
qemu-kvm-1.5.3-86.el7.x86_64
qemu-kvm-common-1.5.3-86.el7.x86_64
ipxe-roms-qemu-20130517-6.gitc4bce43.el7.noarch
qemu-img-1.5.3-86.el7.x86_64
[root host3 nova]# rpm -qa|grep libvirt
libvirt-daemon-1.2.8-16.el7.x86_64
libvirt-daemon-driver-nwfilter-1.2.8-16.el7.x86_64
libvirt-python-1.2.8-7.el7.x86_64
libvirt-daemon-driver-storage-1.2.8-16.el7.x86_64
libvirt-daemon-driver-qemu-1.2.8-16.el7.x86_64
libvirt-daemon-config-nwfilter-1.2.8-16.el7.x86_64
libvirt-daemon-driver-secret-1.2.8-16.el7.x86_64
libvirt-daemon-driver-interface-1.2.8-16.el7.x86_64
libvirt-client-1.2.8-16.el7.x86_64
libvirt-glib-0.1.7-3.el7.x86_64
libvirt-daemon-driver-network-1.2.8-16.el7.x86_64
libvirt-daemon-driver-nodedev-1.2.8-16.el7.x86_64
libvirt-daemon-kvm-1.2.8-16.el7.x86_64

And I can see the vf of the NIC after ‘ echo '7' > /sys/class/net/ens1f1/device/sriov_numvfs '

[root host3 VTS2.1-demo]# lspci |grep -i ethernet
08:00.0 Ethernet controller: QLogic Corp. 10GbE Converged Network Adapter (TCP/IP Networking) (rev 02)
08:00.1 Ethernet controller: QLogic Corp. 10GbE Converged Network Adapter (TCP/IP Networking) (rev 02)
0f:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)
0f:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)
10:10.1 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01)
10:10.3 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01)
10:10.5 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01)
10:10.7 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01)
10:11.1 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01)
10:11.3 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01)
10:11.5 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01)


I configured the interface as bellow in XML:

        <interface type="hostdev" managed="yes">
        <mac address="fa:16:3e:f7:57:5f"/>
        <source>
            <address type="pci" domain="0x0000" bus="0x10" slot="0x10" function="0x3"/>
        </source>
        <vlan>
            <tag id="1000"/>
        </vlan>
        </interface>


But the error output when I boot one vm:

[root host3 VTS2.1-demo]# virsh create vtc.demo.xml 
error: Failed to create domain from vtc.demo.xml
error: internal error: early end of file from monitor: possible problem:
2016-02-22T07:38:42.169035Z qemu-kvm: -device vfio-pci,host=10:10.3,id=hostdev0,bus=pci.0,addr=0x3: vfio: error, group 17 is not viable, please ensure all devices within the iommu_group are bound to their vfio bus driver.
2016-02-22T07:38:42.169215Z qemu-kvm: -device vfio-pci,host=10:10.3,id=hostdev0,bus=pci.0,addr=0x3: vfio: failed to get group 17
2016-02-22T07:38:42.169233Z qemu-kvm: -device vfio-pci,host=10:10.3,id=hostdev0,bus=pci.0,addr=0x3: Device initialization failed.
2016-02-22T07:38:42.169248Z qemu-kvm: -device vfio-pci,host=10:10.3,id=hostdev0,bus=pci.0,addr=0x3: Device 'vfio-pci' could not be initialized


Could you please help to solve it?

Looking forward for your reply.

Thanks.





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