[PATCH 2/2] nvme: add emulation for zone-append

[Javier Gonzalez]

On 18.08.2020 10:39, Keith Busch wrote:
>On Tue, Aug 18, 2020 at 07:29:12PM +0200, Javier Gonzalez wrote:
>> On 18.08.2020 09:58, Keith Busch wrote:
>> > On Tue, Aug 18, 2020 at 11:50:33AM +0200, Javier Gonzalez wrote:
>> > > a number of customers are requiring the use of normal writes, which we
>> > > want to support.
>> >
>> > A device that supports append is completely usable for those customers,
>> > too. There's no need to create divergence in this driver.
>>
>> Not really. You know as well as I do that some features are disabled for
>> a particular SSD model on customer requirements. Generic models
>> implementing append can submit both I/Os, but those that remove append
>> are left out.
>
>You are only supporting my point: if your device supports append, you
>get to work in every ZNS use case, otherwise you only get to work in a
>subset.

There are several devices. Some of them enable append and some do not. I
would like to support the later too.