On Tue, Aug 29, 2017 at 10:42:18AM +0800, Guan Junxiong wrote: > As for the __nvme_find_ns_head function, can it lookup the namespace > globally, not in the current subsytem. No. > Take hypermetro scenario for Please define "hypermetro" > example, two namespaces which should be viewed as the same namespaces > from the database application but exist in two different cities respectively. > Some vendors maybe specify those two namespaces with the same UUID. Then these vendors are non-compliant IFF the controllers don't belong to the same subsystem. > In addition, could you add a switch to turn on/off finding namespaces in > a subsystem-wide level or globally? No. > Can namespace be shared between two subsystem? No - if you share namespace access you are in the same subsystem.
