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Hmm, very odd indeed. Any way you can save the nova-compute logs from 
when you removed the GPU and restarted the nova-compute service and 
paste those logs to paste.openstack.org? Would be useful in tracking 
down this buggy behaviour...

Best,
-jay

On 07/06/2017 08:54 PM, Eddie Yen wrote:
> Hi Jay,
> 
> The status of the "removed" GPU still shows as "Available" in 
> pci_devices table.
> 
> 2017-07-07 8:34 GMT+08:00 Jay Pipes <jaypipes at gmail.com 
> <mailto:jaypipes at gmail.com>>:
> 
>     Hi again, Eddie :) Answer inline...
> 
>     On 07/06/2017 08:14 PM, Eddie Yen wrote:
> 
>         Hi everyone,
> 
>         I'm using OpenStack Mitaka version (deployed from Fuel 9.2)
> 
>         In present, I installed two different model of GPU card.
> 
>         And wrote these information into pci_alias and
>         pci_passthrough_whitelist in nova.conf on Controller and Compute
>         (the node which installed GPU).
>         Then restart nova-api, nova-scheduler,and nova-compute.
> 
>         When I check database, both of GPU info registered in
>         pci_devices table.
> 
>         Now I removed one of the GPU from compute node, and remove the
>         information from nova.conf, then restart services.
> 
>         But I check database again, the information of the removed card
>         still exist in pci_devices table.
> 
>         How can I do to fix this problem?
> 
> 
>     So, when you removed the GPU from the compute node and restarted the
>     nova-compute service, it *should* have noticed you had removed the
>     GPU and marked that PCI device as deleted. At least, according to
>     this code in the PCI manager:
> 
>     https://github.com/openstack/nova/blob/master/nova/pci/manager.py#L168-L183
>     <https://github.com/openstack/nova/blob/master/nova/pci/manager.py#L168-L183>
> 
>     Question for you: what is the value of the status field in the
>     pci_devices table for the GPU that you removed?
> 
>     Best,
>     -jay
> 
>     p.s. If you really want to get rid of that device, simply remove
>     that record from the pci_devices table. But, again, it *should* be
>     removed automatically...
> 
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