Christoph Hellwig <hch@xxxxxxxxxxxxx> writes: > On Tue, Jul 11, 2023 at 08:23:40AM +0200, Andreas Hindborg (Samsung) wrote: >> Yet most on-the-wire protocols for actual hardware does support this >> some way or another. > > Supports what? Passthrough? No. Both SCSI and NVMe has command identifier ranges reserved for vendor specific commands. I would assume that one use of these is to implement passthrough channels to a device for testing out new interfaces. Just guessing though. > >> I somewhat agree in the sense that for consistency, we should either >> move zone management commands to the DRV_OUT range OR move report_zones >> out of this special range and just next to the zone management >> operations. I like the latter option better, and I would love to see the >> block layer do the same at some point. It feels backwards that >> report_zones get special treatment all over the place. > > DRV_IN/OUT is purely a Linux concept. It doesn't make any sense for > a wire protocol. Ok 👍 BR Andreas
