On Mon, 10 Feb 2020, Keith Busch wrote:

Right now the nvme driver unconditionally sets QUEUE_FLAG_NONROT 
(non-rational, i.e. ssd), on all nvme namespace's request_queue flags. 

I agree -- the standard nomenclature is not rational ;-) Air-cooled is not 
"solid state". Any round-robin algorithm is "rotational". No expensive 
array is a "R.A.I.D.". There's no "S.C.S.I." on a large system...