On Thu, Oct 01, 2020 at 06:10:57AM +0200, Klaus Jensen wrote: > On Sep 30 15:04, Keith Busch wrote: > > Let the user specify a specific namespace if they want to get access > > stats for a specific namespace. > > > > I don't think this makes sense for v1.3+. > > NVM Express v1.3d, Section 5.14.1.2: "There is no namespace specific > information defined in the SMART / Health log page in this revision of > the specification. therefore the controller log page and namespace > specific log page contain identical information". > > I have no idea why the TWG decided this, but that's the way it is ;)
I don't think they did that. The behavior you're referring to is specific to controllers that operate a particular way: "If the log page is not supported on a per namespace basis ...". They were trying to provide a spec compliant way for controllers to return a success status if you supplied a valid NSID when the controller doesn't support per-namespace smart data.. The previous paragraph is more clear on this: "The controller may also support requesting the log page on a per namespace basis, as indicated by bit 0 of the LPA field in the Identify Controller data structure".
