On Mon, Aug 28, 2017 at 08:41:23PM +0800, Guan Junxiong wrote: > If a namespace can be accessed by another subsystem, the above line > will ignore such namespace. > > Or does the NVMe/NVMf specification constrain that any namespace > can only be accessed by a subsystem? A namespace is a part of a NVMe subsystem. You must not reuse the uniqueue identifier outside the subsystem scope or your implementation will be non-compliant.