On Fri, Jul 17, 2020 at 10:55:49AM +0000, Damien Le Moal wrote: > > > > 2) add one new limit for write on seq zone, such as: zone_write_block_size > > > > Then the two cases can be dealt with in same way, and physical block > > size is usually a hint as Christoph mentioned, looks a bit weird to use > > it in this way, or at least the story should be documented. > > Yeah, but zone_write_block_size would end up always being equal to the physical > block size for SMR. For ZNS and nullblk, logical block size == physical block > size, always, so it would not be useful. I do not think such change is necessary. I think we should add a write_block_size (or write_granularity) field. There have been some early stage NVMe proposal to add that even for conventional random/write namespaces.
