On Fri, Jul 10, 2020 at 06:59:45PM +0530, Kanchan Joshi wrote: > > block doesn't work for the case of writes to files that don't have > > to be aligned in any way. And that I think is the more broadly > > applicable use case than zone append on block devices. > > But when can it happen that we do zone-append on a file (zonefs I > asssume), and device returns a location (write-pointer essentially) > which is not in multiple of 512b? All the time. You open a file with O_APPEND. You write a record to it of any kind of size, then the next write will return the position it got written at, which can be anything.