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

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To: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx>
Subject: Re: [LSF/MM/BPF BoF] BoF for Zoned Storage
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Thu, 10 Mar 2022 23:42:35 -0800
Cc: Javier González <javier@xxxxxxxxxxx>, Keith Busch <kbusch@xxxxxxxxxx>, James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>, Luis Chamberlain <mcgrof@xxxxxxxxxx>, Dave Chinner <david@xxxxxxxxxxxxx>, linux-block@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, lsf-pc@xxxxxxxxxxxxxxxxxxxxxxxxxx, Matias Bjørling <matias.bjorling@xxxxxxx>, Damien Le Moal <damien.lemoal@xxxxxxx>, Bart Van Assche <bvanassche@xxxxxxx>, Adam Manzanares <a.manzanares@xxxxxxxxxxx>, Keith Busch <keith.busch@xxxxxxx>, Johannes Thumshirn <johannes.thumshirn@xxxxxxx>, Naohiro Aota <naohiro.aota@xxxxxxx>, Pankaj Raghav <pankydev8@xxxxxxxxx>, Kanchan Joshi <joshi.k@xxxxxxxxxxx>, Nitesh Shetty <nj.shetty@xxxxxxxxxxx>
In-reply-to: <61c1b49c-cd34-614a-876a-29b796e4ff0d@opensource.wdc.com>
References: <69932637edee8e6d31bafa5fd39e19a9790dd4ab.camel@HansenPartnership.com> <DD05D9B0-195F-49EF-80DA-1AA0E4FA281F@javigon.com> <20220307151556.GB3260574@dhcp-10-100-145-180.wdc.com> <8f8255c3-5fa8-310b-9925-1e4e8b105547@opensource.wdc.com> <20220311072101.k52rkmsnecolsoel@ArmHalley.localdomain> <61c1b49c-cd34-614a-876a-29b796e4ff0d@opensource.wdc.com>

On Fri, Mar 11, 2022 at 04:39:12PM +0900, Damien Le Moal wrote:
> > (we need to look into it). F2FS will use the emulation layer for now;
> > only !PO2 devices will pay the price. We will add a knob in the block
> > layer so that F2FS can force enable the emulation.
> 
> No. The FS has no business changing the device.

And nvme will not support any kind of emulation if that wasn't clear.

Follow-Ups:
- Re: [LSF/MM/BPF BoF] BoF for Zoned Storage
  - From: Javier González

References:
- Re: [LSF/MM/BPF BoF] BoF for Zoned Storage
  - From: James Bottomley
- Re: [LSF/MM/BPF BoF] BoF for Zoned Storage
  - From: Javier González
- Re: [LSF/MM/BPF BoF] BoF for Zoned Storage
  - From: Keith Busch
- Re: [LSF/MM/BPF BoF] BoF for Zoned Storage
  - From: Damien Le Moal
- Re: [LSF/MM/BPF BoF] BoF for Zoned Storage
  - From: Javier González
- Re: [LSF/MM/BPF BoF] BoF for Zoned Storage
  - From: Damien Le Moal

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