Re: [External] [LSF/MM/BPF BoF] Session for Zoned Storage 2023

[Ming Lei <ming.lei@redhat.com>]

On Fri, Jan 06, 2023 at 05:56:24PM -0800, Viacheslav A.Dubeyko wrote:
> 
> 
> > On Jan 6, 2023, at 11:30 AM, Viacheslav Dubeyko <slava@dubeyko.com> wrote:
> > 
> > 
> > 
> >> On Jan 6, 2023, at 11:18 AM, Luis Chamberlain <mcgrof@kernel.org> wrote:
> >> 
> >> On Fri, Jan 06, 2023 at 11:17:19AM -0800, Viacheslav Dubeyko wrote:
> >>> Hello,
> >>> 
> >>> As far as I can see, I have two topics for discussion.
> >> 
> >> What's that?
> > 
> > I am going to share these topics in separate emails. :)
> > 
> > (1) I am going to share SSDFS patchset soon. And topic is:
> > SSDFS + ZNS SSD: deterministic architecture decreasing TCO cost of data infrastructure.
> > 
> > (2) Second topic is:
> > How to achieve better lifetime and performance of caching layer with ZNS SSD?
> > 
> 
> I think we can consider such discussions:
> (1) I assume that we still need to discuss PO2 zone sizes?
> (2) Status of ZNS SSD support in F2FS, btrfs (maybe, bcachefs and other file systems)
> (3) Any news from ZoneFS (+ ZenFS maybe)?
> (4) New ZNS standard features that we need to support on block layer + FS levels?
> (5) ZNS drive emulation + additional testing features?

ZNS drive emulation can be done as one ublk target(userspace
implementation with ublk driver extension), and it was discussed before:

https://github.com/ming1/ubdsrv/pull/28


Thanks, 
Ming