On Thu, Mar 26, 2020 at 08:23:34AM +0000, Damien Le Moal wrote: > Open & Close all zones are indeed not super useful, at least on SMR drives. But > finishing all zones does have some benefit, namely the ability to quickly change > all incompletely written zones into "read-only" full zones. For drives with low > zone resources (open or active zones), this can be useful to recover zone > resources. Again, not so much on SMR drives, but this could come in handy for > ZNS drives with low zone resources (max open zones etc). What quantifies the "some benefit"? If you have an application that micro-manages the zone state it better knows what zones are open. But even if we want to add a finish all I'd rather wait for ZNS support to land and real use cases, as it sounds all rather dubious.
