Christoph, >> max_zone_append_sectors also appears to be gated exclusively by hardware >> constraints. Is there user-controllable limit in place for append >> operations? > > Zone Append operations can't be split, as they return the first written > LBA to the caller. If you'd split it you'd now need to return multiple > start LBA values. Yep, this limit would have to be enforced at the top. Anyway, not sure how important this is given modern drives. I just know that for our workloads the soft limit is something we almost always end up tweaking. -- Martin K. Petersen Oracle Linux Engineering