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Date:   Fri, 12 Nov 2021 06:54:21 +0100
From:   Christoph Hellwig <hch@lst.de>
To:     Neeraj Singh <nksingh85@gmail.com>
Cc:     =?iso-8859-1?Q?=C6var_Arnfj=F6r=F0?= Bjarmason <avarab@gmail.com>,
        git@vger.kernel.org, Patrick Steinhardt <ps@pks.im>,
        Jeff King <peff@peff.net>,
        Johannes Schindelin <Johannes.Schindelin@gmx.de>,
        Junio C Hamano <gitster@pobox.com>,
        "Neeraj K. Singh" <neerajsi@microsoft.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Eric Wong <e@80x24.org>, Christoph Hellwig <hch@lst.de>,
        Emily Shaffer <emilyshaffer@google.com>
Subject: Re: RFC: A configuration design for future-proofing fsync()
 configuration
Message-ID: <20211112055421.GA27823@lst.de>
References: <211110.86r1bogg27.gmgdl@evledraar.gmail.com> <20211111004724.GA839@neerajsi-x1.localdomain>
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On Wed, Nov 10, 2021 at 04:47:24PM -0800, Neeraj Singh wrote:
> It would be nice to loop in some Linux fs developers to find out what can be
> done on current implementations to get the durability without terrible
> performance. From reading the docs and mailing threads it looks like the
> sync_file_range + bulk fsync approach should actually work on the current XFS
> implementation.

If you want more than just my advice linux-fsdevel@vger.kernel.org is
a good place to find a wide range of opinions.

Anyway, I think syncfs is the biggest band for the buck as it will give
you very efficient syncing with very little overhead in git, but it does
have a huge noisy neighbor problem that might make it unattractive
for multi-tenant file systems or git hosting.