Open Stack

Hello everyone,

I would like to resize an instance with PCI devices (GPU Passthrough) to  a
flavor without PCI Devices, but nova-api return no valid host.

Response: No valid host was found. No valid host found for resize (HTTP
400) (Request-ID: req-9d6cf3f9-8f6f-482f-b0b1-95ec286a0fc3)

I checked nova-scheduler log:

Filtering removed all hosts for the request with instance ID
'e7b607ef-6be5-4bbc-9849-e31d622ecdfe'. Filter results:
['AggregateInstanceExtraSpecsFilter: (start: 85, end: 44)', 'RetryFilter:
(start: 44, end: 44)', 'AvailabilityZoneFilter: (start: 44, end: 29)',
'ComputeFilter: (start: 29, end: 29)', 'ImagePropertiesFilter: (start: 29,
end: 29)', 'ServerGroupAntiAffinityFilter: (start: 29, end: 29)',
'ServerGroupAffinityFilter: (start: 29, end: 29)', 'PciPassthroughFilter:
(start: 29, end: 0)']

Actually, new flavor is not contain PCI specs, But It cannot pass PCI
Filter.

Thanks & Regards
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