Comment 6 for bug 1950186

I guess the only way would be to work with custom extra specs inside flavors/images which can be quite a hassel and can be prone to (human)errors. Especially when forgetting to set this for new flavors. Otherwise I don't think of any way on how to control the scheduling for mixed memory-backend nodes.

+1 for making placement (and/or nova-scheduler) aware about the different memory backends of a compute-node.