linux-kernel - Re: [PATCH v6 0/6] block/md/dm: set chunk

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Message-ID: <706d13cf-d0e2-4c30-8943-2c719f9be083@oracle.com>
Date: Mon, 14 Jul 2025 08:52:39 +0100
From: John Garry <john.g.garry@...cle.com>
To: Christoph Hellwig <hch@....de>, Damien Le Moal <dlemoal@...nel.org>
Cc: agk@...hat.com, snitzer@...nel.org, mpatocka@...hat.com, song@...nel.org,
        yukuai3@...wei.com, nilay@...ux.ibm.com, axboe@...nel.dk,
        cem@...nel.org, dm-devel@...ts.linux.dev, linux-kernel@...r.kernel.org,
        linux-raid@...r.kernel.org, linux-block@...r.kernel.org,
        ojaswin@...ux.ibm.com, martin.petersen@...cle.com,
        akpm@...ux-foundation.org, linux-xfs@...r.kernel.org,
        djwong@...nel.org
Subject: Re: [PATCH v6 0/6] block/md/dm: set chunk_sectors from stacked dev
 stripe size

On 14/07/2025 06:53, Christoph Hellwig wrote:
> Now we should be able to implement the software atomic writes pretty
> easily for zoned XFS, and funnily they might actually be slightly faster
> than normal writes due to the transaction batching.  Now that we're
> getting reasonable test coverage we should be able to give it a spin, but
> I have a few too many things on my plate at the moment.

Isn't reflink currently incompatible with zoned xfs?

I don't think that there is even anything else needed to automatically 
get software-based atomics support for zoned xfs.