[PATCH 5/5] nvme: support for zoned namespaces

[Luis Chamberlain]

On Wed, Jun 17, 2020 at 09:23:05PM +0200, Matias Bjørling wrote:
> On 17/06/2020 21.09, Javier González wrote:
> > As you are well aware, there are some cases where append introduces
> > challenges. This is well-documented on the bibliography around nameless
> > writes.
> 
> The nameless writes idea is vastly different from Zone append, and have
> little of the drawbacks of nameless writes, which makes the well-documented
> literature not apply.

Sorry for joining late to the party!

Just curious if we have any public information on analysis on the
differences between zone append and nameless writes?

If we don't then this sould seem to be new territory? I'd expect many
drawbacks might not be known yet. In new filesystem APIs we know all these
things will always creep up. Not that there couldn't be unexpected issues for
nameless writes once and if someone did try to add support for it in a real
OS. But if nameless writes is pretty much append, it gives me a good idea
where to expect some issues ahead of time.

Thanks!

  Luis