Hello, I'm facing an issue since days regarding SR-IOV.

On a specific configuration, I'm unable to start VM with a VF.
Tyan S5510 + Intel E3 1220 (vt-x and vt-d enabled).

I've enable 63 VF (intel X520-DA2). Engine interface show me : 
Enabled virtual function: 63
Free Virtual function: 63
I've create a Network + vNIC profile (Passthrough enabled)

I have the same issue if I force mapping "Allowed Networks / All networks / 
Specific networks" or not (on host setup network)

When I try to start VM Engine error message is: 
Failed to run VM test due to a failed validation: [Cannot run VM. There is no 
host that satisfies current scheduling constraints. See below for details:, The 
host sriov-hp1.admin-lan.nfrance.com did not satisfy internal filter Network 
because there are no free virtual functions which are suitable for virtual 
nic(s) nic1. A virtual function is considered as suitable if the VF's 
configuration of its physical function contains the virtual nic's 
network/network label.] (User: admin@internal-authz).

Problem seem not be related to host. VF are visible into ip l on my host. 
Unfortunately, I have no representative error log on side host or engine log 
(expect error above on engine log)

For information, kernel parameters on host are: intel_iommu=on 
pci=assign-busses.  pci=assign-busses is mandatory on this motherboard 
otherwise VF cannot be created.

Do you have idea ?

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