On Tue, Jun 16, 2020 at 05:55:26PM +0200, Javier González wrote: > On 16.06.2020 08:48, Keith Busch wrote: > > On Tue, Jun 16, 2020 at 05:02:17PM +0200, Javier González wrote: > > > This depends very much on how the FS / application is managing > > > stripping. At the moment our main use case is enabling user-space > > > applications submitting I/Os to raw ZNS devices through the kernel. > > > > > > Can we enable this use case to start with? > > > > I think this already provides that. You can set the nsid value to > > whatever you want in the passthrough interface, so a namespace block > > device is not required to issue I/O to a ZNS namespace from user space. > > Mmmmm. Problem now is that the check on the nvme driver prevents the ZNS > namespace from being initialized. Am I missing something? Hm, okay, it may not work for you. We need the driver to create at least one namespace so that we have tags and request_queue. If you have that, you can issue IO to any other attached namespace through the passthrough interface, but we can't assume there is an available namespace.
