Christoph, > Do we actually have Linux users of Type 3 at all? I think for NVMe > we could just trivially disable Linux support, and I suspect for SCSI > as well, but I'll have to defer to you on that. There were several companies looking into building Linux things using Type 3 SCSI devices. No idea whether this happened. I definitely still get lots of mail from people using Type 2. Something which also really shouldn't exist outside of a disk array. For NVMe, I assume nobody has tried Type 3 given the discrepancy between how SCSI works and how the NVMe spec is currently written. In any case. Since Type 3 is a pretty trivial subset of Type 1, I don't see much benefit in actively removing it. One could argue we could reduce the plumbing by removing a level of indirection. However, we'll need the infrastructure to support the impending Type 4 as well. So my preference is to just leave things as-is for now. -- Martin K. Petersen Oracle Linux Engineering
