On 08/28/2013 05:25 AM, Brian Rak wrote: > If I'm using the SR-IOV Pool assignment method (from > http://wiki.libvirt.org/page/Networking#Assignment_from_a_pool_of_SRIOV_V... > ), how would I check how many virtual functions are already in use? Hi Brian Hope the following can help you. [root@sriov2 images]# virsh net-dumpxml hostnet <network> <name>hostnet</name> <uuid>6b49be3c-bb91-c16d-b475-2929678720f4</uuid> <forward mode='hostdev' managed='yes'> <pf dev='eth2'/> </forward> </network> [root@sriov2 images]# virsh start r6 Domain r6 started [root@sriov2 images]# virsh attach-device r6 vfpool.xml Device attached successfully [root@sriov2 images]# virsh attach-device r6 vfpool.xml Device attached successfully [root@sriov2 images]# virsh net-dumpxml hostnet <network *connections='2'*> *<=====the value of connections means how many VFs in the pool are using.* <name>hostnet</name> <uuid>6b49be3c-bb91-c16d-b475-2929678720f4</uuid> <forward mode='hostdev' managed='yes'> <pf dev='eth2'/> <address type='pci' domain='0x0000' bus='0x0f' slot='0x10' function='0x0'/> <address type='pci' domain='0x0000' bus='0x0f' slot='0x10' function='0x2'/> <address type='pci' domain='0x0000' bus='0x0f' slot='0x10' function='0x4'/> <address type='pci' domain='0x0000' bus='0x0f' slot='0x10' function='0x6'/> <address type='pci' domain='0x0000' bus='0x0f' slot='0x11' function='0x0'/> <address type='pci' domain='0x0000' bus='0x0f' slot='0x11' function='0x2'/> <address type='pci' domain='0x0000' bus='0x0f' slot='0x11' function='0x4'/> </forward> </network> > > Is there a method other then looping through all the active guests > and determining if they're using the SR-IOV interface? > [root@sriov2 images]# virsh dumpxml r6|grep interface -A 4 <interface type='network'> <mac address='52:54:00:0a:16:28'/> <source network=*'hostnet'/*> <alias name='*hostdev0'/*> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <interface type='network'> <mac address='52:54:00:08:62:66'/> <source network='*hostnet'*/> <alias name='*hostdev1*'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </interface> > _______________________________________________ > libvirt-users mailing list > libvirt-users(a)redhat.com > https://www.redhat.com/mailman/listinfo/libvirt-users

I have an Intel X540 SR-IOV NIC in a box with ACS support running RHEL6.4. Hi Hongming, I'm hoping you can please help with two issues: 1. The pool works, but I transparent VLAN with the pool does not. I have to manually run "ip" afterwards to get it to work. # virsh net-dumpxml em2net <network connections='1'> <name>em2net</name> <uuid>d5dabeb2-fa09-3edf-660a-db42d8cd3f4d</uuid> <forward mode='hostdev' managed='yes'> <pf dev='em2'/> <snip giant list of VFs> </forward> </network> # virsh dumpxml guestbox --- <interface type='network'> <mac address='52:54:00:c0:de:00'/> <source network='em2net'/> <vlan> <tag id='17'/> </vlan> <alias name='hostdev0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </interface> --- The networking doesn't work until I run the following command on the host: ip link set em2 vf 0 vlan 17 Then networking in the guest starts working and the following shows up in dmesg on the host: ixgbe 0000:01:00.1: Setting VLAN 17, QOS 0x0 on VF 0

2. I can only do a single SR-IOV NIC per guest. If I try to add another NIC (or even PCI passthrough), I get "Duplicate ID 'hostdev0' for device"