From: Luis Chamberlain <mcgrof@kernel.org>
To: Christoph Hellwig <hch@lst.de>
Cc: "Javier González" <javier@javigon.com>,
"Matias Bjørling" <Matias.Bjorling@wdc.com>,
"Damien Le Moal" <damien.lemoal@opensource.wdc.com>,
"Keith Busch" <kbusch@kernel.org>,
"Pankaj Raghav" <p.raghav@samsung.com>,
"Adam Manzanares" <a.manzanares@samsung.com>,
"jiangbo.365@bytedance.com" <jiangbo.365@bytedance.com>,
"kanchan Joshi" <joshi.k@samsung.com>,
"Jens Axboe" <axboe@kernel.dk>,
"Sagi Grimberg" <sagi@grimberg.me>,
"Pankaj Raghav" <pankydev8@gmail.com>,
"Kanchan Joshi" <joshiiitr@gmail.com>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>
Subject: Re: [PATCH 0/6] power_of_2 emulation support for NVMe ZNS devices
Date: Tue, 15 Mar 2022 10:00:59 -0700 [thread overview]
Message-ID: <YjDGS6ROx6tI5FBR@bombadil.infradead.org> (raw)
In-Reply-To: <20220315133052.GA12593@lst.de>
On Tue, Mar 15, 2022 at 02:30:52PM +0100, Christoph Hellwig wrote:
> On Tue, Mar 15, 2022 at 02:26:11PM +0100, Javier González wrote:
> > but we do not see a usage for ZNS in F2FS, as it is a mobile
> > file-system. As other interfaces arrive, this work will become natural.
> >
> > ZoneFS and butrfs are good targets for ZNS and these we can do. I would
> > still do the work in phases to make sure we have enough early feedback
> > from the community.
> >
> > Since this thread has been very active, I will wait some time for
> > Christoph and others to catch up before we start sending code.
>
> Can someone summarize where we stand?
RFCs should be posted to help review and evaluate direct NPO2 support
(not emulation) given we have no vendor willing to take a position that
NPO2 will *never* be supported on ZNS, and its not clear yet how many
vendors other than Samsung actually require NPO2 support. The other
reason is existing NPO2 customers currently cake in hacks to Linux to
supoport NPO2 support, and so a fragmentation already exists. To help
address this it's best to evaluate what the world of NPO2 support would
look like and put the effort to do the work for that and review that.
Luis
next prev parent reply other threads:[~2022-03-15 17:01 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20220308165414eucas1p106df0bd6a901931215cfab81660a4564@eucas1p1.samsung.com>
2022-03-08 16:53 ` [PATCH 0/6] power_of_2 emulation support for NVMe ZNS devices Pankaj Raghav
2022-03-08 16:53 ` [PATCH 1/6] nvme: zns: Allow ZNS drives that have non-power_of_2 zone size Pankaj Raghav
2022-03-08 17:14 ` Keith Busch
2022-03-08 17:43 ` Pankaj Raghav
2022-03-09 3:40 ` Damien Le Moal
2022-03-09 13:19 ` Pankaj Raghav
2022-03-09 3:44 ` Damien Le Moal
2022-03-09 13:35 ` Pankaj Raghav
2022-03-08 16:53 ` [PATCH 2/6] block: Add npo2_zone_setup callback to block device fops Pankaj Raghav
2022-03-09 3:46 ` Damien Le Moal
2022-03-09 14:02 ` Pankaj Raghav
2022-03-08 16:53 ` [PATCH 3/6] block: add a bool member to request_queue for power_of_2 emulation Pankaj Raghav
2022-03-08 16:53 ` [PATCH 4/6] nvme: zns: Add support for power_of_2 emulation to NVMe ZNS devices Pankaj Raghav
2022-03-09 4:04 ` Damien Le Moal
2022-03-09 14:33 ` Pankaj Raghav
2022-03-09 21:43 ` Damien Le Moal
2022-03-10 20:35 ` Luis Chamberlain
2022-03-10 23:50 ` Damien Le Moal
2022-03-11 0:56 ` Luis Chamberlain
2022-03-08 16:53 ` [PATCH 5/6] null_blk: forward the sector value from null_handle_memory_backend Pankaj Raghav
2022-03-08 16:53 ` [PATCH 6/6] null_blk: Add support for power_of_2 emulation to the null blk device Pankaj Raghav
2022-03-09 4:09 ` Damien Le Moal
2022-03-09 14:42 ` Pankaj Raghav
2022-03-10 9:47 ` [PATCH 0/6] power_of_2 emulation support for NVMe ZNS devices Christoph Hellwig
2022-03-10 12:57 ` Pankaj Raghav
2022-03-10 13:07 ` Matias Bjørling
2022-03-10 13:14 ` Javier González
2022-03-10 14:58 ` Matias Bjørling
2022-03-10 15:07 ` Keith Busch
2022-03-10 15:16 ` Javier González
2022-03-10 23:44 ` Damien Le Moal
2022-03-10 15:13 ` Javier González
2022-03-10 14:44 ` Christoph Hellwig
2022-03-11 20:19 ` Luis Chamberlain
2022-03-11 20:51 ` Keith Busch
2022-03-11 21:04 ` Luis Chamberlain
2022-03-11 21:31 ` Keith Busch
2022-03-11 22:24 ` Luis Chamberlain
2022-03-12 7:58 ` Damien Le Moal
2022-03-14 7:35 ` Christoph Hellwig
2022-03-14 7:45 ` Damien Le Moal
2022-03-14 7:58 ` Christoph Hellwig
2022-03-14 10:49 ` Javier González
2022-03-14 14:16 ` Matias Bjørling
2022-03-14 16:23 ` Luis Chamberlain
2022-03-14 19:30 ` Matias Bjørling
2022-03-14 19:51 ` Luis Chamberlain
2022-03-15 10:45 ` Matias Bjørling
2022-03-14 19:55 ` Javier González
2022-03-15 12:32 ` Matias Bjørling
2022-03-15 13:05 ` Javier González
2022-03-15 13:14 ` Matias Bjørling
2022-03-15 13:26 ` Javier González
2022-03-15 13:30 ` Christoph Hellwig
2022-03-15 13:52 ` Javier González
2022-03-15 14:03 ` Matias Bjørling
2022-03-15 14:14 ` Johannes Thumshirn
2022-03-15 14:27 ` David Sterba
2022-03-15 19:56 ` Pankaj Raghav
2022-03-15 15:11 ` Javier González
2022-03-15 18:51 ` Pankaj Raghav
2022-03-16 8:37 ` Johannes Thumshirn
2022-03-15 17:00 ` Luis Chamberlain [this message]
2022-03-16 0:07 ` Damien Le Moal
2022-03-16 0:23 ` Luis Chamberlain
2022-03-16 0:46 ` Damien Le Moal
2022-03-16 1:24 ` Luis Chamberlain
2022-03-16 1:44 ` Damien Le Moal
2022-03-16 2:13 ` Luis Chamberlain
2022-03-16 2:27 ` Martin K. Petersen
2022-03-16 2:41 ` Luis Chamberlain
2022-03-16 8:44 ` Javier González
2022-03-15 13:39 ` Matias Bjørling
2022-03-16 0:00 ` Damien Le Moal
2022-03-16 8:57 ` Javier González
2022-03-16 16:18 ` Pankaj Raghav
2022-03-14 8:36 ` Matias Bjørling
2022-03-11 22:23 ` Adam Manzanares
2022-03-11 22:30 ` Keith Busch
2022-03-21 16:21 ` Jonathan Derrick
2022-03-21 16:44 ` Keith Busch
2022-03-10 17:38 ` Adam Manzanares
2022-03-14 7:36 ` Christoph Hellwig
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