On Thu, Mar 2, 2023 at 5:02 PM Ming Lei <ming.lei@xxxxxxxxxx> wrote: > > On Thu, Mar 02, 2023 at 04:32:21PM +0800, Ming Lei wrote: > > On Thu, Mar 02, 2023 at 08:31:07AM +0100, Andreas Hindborg wrote: > > > > > ... > > > > > > > I agree about fetching more zones. However, it is no good to fetch up to > > > a max, since the requested zone report may less than max. I was > > > > Short read should always be supported, so the interface may need to > > return how many zones in single command, please refer to nvme_ns_report_zones(). > > blk_zone is part of uapi, maybe the short read can be figured out by > one all-zeroed 'blk_zone'? then no extra uapi data is needed for > reporting zones. oops, we have blk_zone_report data for reporting zones to userspace already, see blkdev_report_zones_ioctl(), then this way can be re-used for getting zone report from ublk server too, right? Thanks, Ming
