Dear Openstack community, I am trying to attach NVMe drives to my vms and would like to check the configuration I have because for some reason it is not working. This is my physical host details: [root@zeus-59 ~]# lspci -nn -D | grep -i ssd 0000:03:00.0 Non-Volatile memory controller [0108]: Intel Corporation PCIe Data Center SSD [8086:0953] (rev 01) 0000:04:00.0 Non-Volatile memory controller [0108]: Intel Corporation PCIe Data Center SSD [8086:0953] (rev 01) 0000:06:00.0 Non-Volatile memory controller [0108]: Intel Corporation PCIe Data Center SSD [8086:0953] (rev 01) 0000:07:00.0 Non-Volatile memory controller [0108]: Intel Corporation PCIe Data Center SSD [8086:0953] (rev 01) 0000:08:00.0 Non-Volatile memory controller [0108]: Intel Corporation PCIe Data Center SSD [8086:0953] (rev 01) 0000:09:00.0 Non-Volatile memory controller [0108]: Intel Corporation PCIe Data Center SSD [8086:0953] (rev 01) 0000:84:00.0 Non-Volatile memory controller [0108]: Intel Corporation PCIe Data Center SSD [8086:0953] (rev 01) 0000:85:00.0 Non-Volatile memory controller [0108]: Intel Corporation PCIe Data Center SSD [8086:0953] (rev 01) 0000:86:00.0 Non-Volatile memory controller [0108]: Intel Corporation PCIe Data Center SSD [8086:0953] (rev 01) 0000:87:00.0 Non-Volatile memory controller [0108]: Intel Corporation PCIe Data Center SSD [8086:0953] (rev 01) My idea is to attach either 0000:03:00.0 or 0000:04:00.0 to a vm This is how I identify the block devices for each pci device: [root@zeus-59 ~]# ls -l /sys/bus/pci/devices/0000\:03\:00.0/nvme total 0 drwxr-xr-x. 4 root root 0 Apr 3 14:02 nvme0 [root@zeus-59 ~]# ls -l /sys/bus/pci/devices/0000\:04\:00.0/nvme total 0 drwxr-xr-x. 4 root root 0 Apr 3 14:02 nvme1 I installed the OS on the physical machine leaving those 2 drives intact: [root@zeus-59 ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 59.6G 0 disk ├─sda1 8:1 0 1G 0 part /boot └─sda2 8:2 0 4G 0 part [SWAP] sr0 11:0 1 906M 0 rom nvme0n1 259:15 0 1.8T 0 disk nvme1n1 259:0 0 1.8T 0 disk nvme2n1 259:11 0 1.8T 0 disk └─nvme2n1p1 259:12 0 1.8T 0 part /var/lib/docker/btrfs nvme3n1 259:6 0 1.8T 0 disk └─nvme3n1p1 259:7 0 1.8T 0 part nvme4n1 259:13 0 1.8T 0 disk └─nvme4n1p1 259:14 0 1.8T 0 part nvme5n1 259:5 0 1.8T 0 disk └─nvme5n1p1 259:8 0 1.8T 0 part nvme6n1 259:17 0 1.8T 0 disk └─nvme6n1p1 259:18 0 1.8T 0 part nvme7n1 259:9 0 1.8T 0 disk └─nvme7n1p1 259:10 0 1.8T 0 part nvme8n1 259:3 0 1.8T 0 disk └─nvme8n1p1 259:4 0 1.8T 0 part nvme9n1 259:1 0 1.8T 0 disk └─nvme9n1p1 259:2 0 1.8T 0 part The next thing is to configure Openstack nova api config [pci] alias = { "vendor_id":"8086", "product_id":"0953", "device_type":"type-PCI", "name":"nvme"} nova scheduler config [filter_scheduler] enabled_filters = RetryFilter, AvailabilityZoneFilter, ComputeFilter, ComputeCapabilitiesFilter, ImagePropertiesFilter, ServerGroupAntiAffinityFilter, ServerGroupAffinityFilter, PciPassthroughFilter available_filters = nova.scheduler.filters.all_filters nova compute config [filter_scheduler] enabled_filters = RetryFilter, AvailabilityZoneFilter, ComputeFilter, ComputeCapabilitiesFilter, ImagePropertiesFilter, ServerGroupAntiAffinityFilter, ServerGroupAffinityFilter, PciPassthroughFilter available_filters = nova.scheduler.filters.all_filters [pci] passthrough_whitelist = [ {"address":"0000:03:00.0"}, {"address":"0000:04:00.0"} ] alias = { "vendor_id":"8086", "product_id":"0953", "device_type":"type-PCI", "name":"nvme"} Then I create my flavor openstack flavor create nvme.small --ram 64000 --disk 10 --vcpus 7 --property "pci_passthrough:alias"="nvme:1" I created the vm towards the host with the free nvme drives [root@openstack-deployment ~]# openstack server create --flavor nvme.small --image centos7.5-image --nic net-id=hpc --security-group admin --key-name mykey --availability-zone nova:zeus-59.localdomain test_nvme_small Vm creation fails and I can see this error in the nova compute logs 2019-04-03 16:50:35.512 7 ERROR nova.virt.libvirt.guest [req-8478a99f-bad0-43d5-b405-55c45e8d8cae 91e83343e9834c8ba0172ff369c8acac b91520cff5bd45c59a8de07c38641582 - default default] Error launching a defined domain with XML: <domain type='kvm'> <name>instance-00000090</name> ... <devices> <emulator>/usr/libexec/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='qcow2' cache='none'/> <source file='/var/lib/nova/instances/a261fcd4-eca3-4982-8b2a-1df33087ab40/disk'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </disk> ... 2019-04-03 16:50:35.513 7 ERROR nova.virt.libvirt.driver [req-8478a99f-bad0-43d5-b405-55c45e8d8cae 91e83343e9834c8ba0172ff369c8acac b91520cff5bd45c59a8de07c38641582 - default default] [instance: a261fcd4-eca3-4982-8b2a-1df33087ab40] Failed to start libvirt guest: libvirtError: unsupported configuration: host doesn't support passthrough of host PCI devices Any idea or advice would be very helpful Thank you very much NOTICE Please consider the environment before printing this email. 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