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On 11/14/2019 3:12 AM, Chris Dent wrote:
> Your request, is asking for CUSTOM_RRR430 will a value of 2, but it
> is only available as 1. Have a look at your server create request,
> there's something, probably your flavor, which is unexpected.

https://review.opendev.org/#/c/620111/ comes to mind, I'm not sure if 
that helps you workaround the problem or not.

Be sure to go through this doc as well:

https://docs.openstack.org/ironic/queens/install/configure-nova-flavors.html#scheduling-based-on-resource-classes

Specifically the part about overriding the VCPU/MEMORY_MB/DISK_GB values 
in the baremetal flavors. My guess is maybe you haven't done that and 
the scheduler is selecting a node based on vcpu/ram/disk that is already 
fully consumed by another node with the same resource class?

Failing all that, it might be an issue due to 
https://review.opendev.org/#/c/637217/ which I abandoned because I just 
didn't have the time or will to push on it any further.

If nothing else the bugs linked to those patches might be helpful with 
workarounds that CERN did when they were doing their baremetal flavor 
migration to custom resource classes. There were definitely bumps along 
the way.

-- 

Thanks,

Matt