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Subject: Re: [PATCH 0/3] block: blk_interposer - Block Layer Interposer
To:     Jens Axboe <axboe@kernel.dk>, Mike Snitzer <snitzer@redhat.com>,
        Sergei Shtepa <sergei.shtepa@veeam.com>, hch@lst.de
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        "steve@sk2.org" <steve@sk2.org>,
        "linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Pavel Tide <Pavel.TIde@veeam.com>, dm-devel@redhat.com
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From:   Hannes Reinecke <hare@suse.de>
Message-ID: <208edf35-ecdc-2d73-4c48-0424943a78c0@suse.de>
Date:   Fri, 11 Dec 2020 17:56:07 +0100
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On 12/11/20 5:33 PM, Jens Axboe wrote:
> On 12/11/20 9:30 AM, Mike Snitzer wrote:
>> While I still think there needs to be a proper _upstream_ consumer of
>> blk_interposer as a condition of it going in.. I'll let others make the
>> call.
> 
> That's an unequivocal rule.
> 
>> As such, I'll defer to Jens, Christoph and others on whether your
>> minimalist blk_interposer hook is acceptable in the near-term.
> 
> I don't think so, we don't do short term bandaids just to plan on
> ripping that out when the real functionality is there. IMHO, the dm
> approach is the way to go - it provides exactly the functionality that
> is needed in an appropriate way, instead of hacking some "interposer"
> into the core block layer.
> 
Which is my plan, too.

I'll be working with the Veeam folks to present a joint patchset 
(including the DM bits) for the next round.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
hare@suse.de                              +49 911 74053 688
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