[Starlingx-discuss] Attaching physical PCI devices to guests

[Scaccia, Amato]

Hello everyone,

I'm trying to enable the PCI passthrough. This is the device's info:

PCI address: 0000:3b:00.0
Vendor ID: 8086
Product ID: 1533

I have applied the following config:

--nova-compute--
  [pci]
  alias = { "vendor_id":"8086", "product_id":"1533", "device_type":"type-PCI", "name":"aliasuno" }
passthrough_whitelist = { "vendor_id": "8086", "product_id": "1533" }

--nova-scheduler--
  [filter_scheduler]
  available_filters = nova.scheduler.filters.all_filters
  enabled_filters = RetryFilter,ComputeFilter,AvailabilityZoneFilter,AggregateInstanceExtraSpecsFilter,ComputeCapabilitiesFilter,ImagePropertiesFilter,NUMATopologyFilter,ServerGroupAffinityFilter,ServerGroupAntiAffinityFilter,PciPassthroughFilter
  [pci]
  alias = { "vendor_id":"8086", "product_id":"1533", "device_type":"type-PCI", "name":"aliasuno" }

--nova-api-
  [pci]
  alias = { "vendor_id":"8086", "product_id":"1533", "device_type":"type-PCI", "name":"aliasuno" }
  [filter_scheduler]
  available_filters = nova.scheduler.filters.all_filters
  enabled_filters = RetryFilter,ComputeFilter,AvailabilityZoneFilter,AggregateInstanceExtraSpecsFilter,ComputeCapabilitiesFilter,ImagePropertiesFilter,NUMATopologyFilter,ServerGroupAffinityFilter,ServerGroupAntiAffinityFilter,PciPassthroughFilter

Then I've created and set a flavor:

$ openstack flavor create --ram 4096 --disk 100 --vcpus 2 m1.medium.pci
$ openstack flavor set m1.medium.pci --property "pci_passthrough:alias"="aliasuno:1"

But when I try to create an instance with this flavor I receive the following error:

No valid host was found. There are not enough hosts available.
500
Traceback (most recent call last): File "/var/lib/openstack/lib/python3.6/site-packages/nova/conductor/manager.py", line 1463, in schedule_and_build_instances instance_uuids, return_alternates=True) File "/var/lib/openstack/lib/python3.6/site-packages/nova/conductor/manager.py", line 870, in _schedule_instances return_alternates=return_alternates) File "/var/lib/openstack/lib/python3.6/site-packages/nova/scheduler/client/query.py", line 42, in select_destinations instance_uuids, return_objects, return_alternates) File "/var/lib/openstack/lib/python3.6/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations return cctxt.call(ctxt, 'select_destinations', **msg_args) File "/var/lib/openstack/lib/python3.6/site-packages/oslo_messaging/rpc/client.py", line 181, in call transport_options=self.transport_options) File "/var/lib/openstack/lib/python3.6/site-packages/oslo_messaging/transport.py", line 129, in _send transport_options=transport_options) File "/var/lib/openstack/lib/python3.6/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 682, in send transport_options=transport_options) File "/var/lib/openstack/lib/python3.6/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 672, in _send raise result nova.exception_Remote.NoValidHost_Remote: No valid host was found. There are not enough hosts available. Traceback (most recent call last): File "/var/lib/openstack/lib/python3.6/site-packages/oslo_messaging/rpc/server.py", line 241, in inner return func(*args, **kwargs) File "/var/lib/openstack/lib/python3.6/site-packages/nova/scheduler/manager.py", line 215, in select_destinations allocation_request_version, return_alternates) File "/var/lib/openstack/lib/python3.6/site-packages/nova/scheduler/filter_scheduler.py", line 96, in select_destinations allocation_request_version, return_alternates) File "/var/lib/openstack/lib/python3.6/site-packages/nova/scheduler/filter_scheduler.py", line 265, in _schedule claimed_instance_uuids) File "/var/lib/openstack/lib/python3.6/site-packages/nova/scheduler/filter_scheduler.py", line 302, in _ensure_sufficient_hosts raise exception.NoValidHost(reason=reason) nova.exception.NoValidHost: No valid host was found. There are not enough hosts available.

How can I fix this? Thanks for your help





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