Newbie and easy questions: I have two cards, one in each stein (centos) compute node setup for kvm, which I want to be able to handle to a vm guest (instance). Following https://docs.openstack.org/nova/latest/admin/pci-passthrough.html, I 1. Setup both computer nodes to vt-t and iommu. 2. On the controller 2.1. Create a PCI alias based on the vendor and product ID alias = { "vendor_id":"19fg", "product_id":"4000", "device_type":"type-PF", "name":"testnic" } - The PCI address for the card is different on each compute node 2.2. Create a flavor, say, n1.large openstack flavor create n1.large --id auto --ram 8192 --disk 80 --vcpus 4 --property "pci_passthrough:alias"="testnic:1" 2.3. Restart openstack-nova-api 3. On each compute node 3.1. Create a PCI alias based on the vendor and product ID alias = { "vendor_id":"19fg", "product_id":"4000", "device_type":"type-PF", "name":"testnic" } 3.2. Create passthrough_whitelist entry passthrough_whitelist = { "vendor_id":"19fg", "product_id":"4000" } 3.3. Restart openstack-nova-compute 4. Create instance (vm guest) using the n1.large flavor. 5. Login to instance and discover dmesg and lspci does not list card 6. Do a "virsh dumpxml" for the instance on its compute node and discover there is no entry for the card listed in the xml file. I take nova would automagically do what I would if this was a kvm install, namely ensure card cannot be accessed/used by the host and then edit the guest xml file so it can see said card. Questions: Q1: If a device is sr-iov capable, do I have to use that or can I just pass the entire card to the vm guest? Q2: Is there anywhere I can look for clues to why is the libvirt xml file for the instance not being populated with the pci card info? So far I only looked in the controller node's nova_scheduler.log file.