On 1/9/23 07:33, Javier González wrote:
On 06.01.2023 17:56, Viacheslav A.Dubeyko wrote:
[ ... ]
As a general comment, do we want to talk about ZNS alone, or zoned
storage in general? We have of course SMR, but also zoned UFS with
actual use-cases.
I propose to broaden the conversation from ZNS to ZNS (NVMe) + ZBC (SCSI).
I think we can consider such discussions:
(1) I assume that we still need to discuss PO2 zone sizes?
For this discussion to move forward, we need users rather than vendors
talking about the need. If someone is willing to drive this discussion,
then it makes sense. I do not believe we will make progress otherwise.
In JEDEC meetings I hear that UFS vendors strongly request support for
zone sizes that are not a power of two. The JEDEC UFS committee is
currently busy with requesting an MoU from T10 for permission to base
JEDEC standards on ZBC. We plan to finalize the ZUFS (zoned UFS)
specification once that MoU has been established (probably later this
spring).
An additional topic I want to talk about is support for queue depths > 1
for sequential write required zone type. I plan to post patches soon
(later this week).
Thanks,
Bart.
