linux-ext4 - Re: [PATCH v7 0/5] Introduce provisioning primitives

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Message-ID: <ZGb2Xi6O3i2pLam8@infradead.org>
Date:   Thu, 18 May 2023 21:09:02 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Sarthak Kukreti <sarthakkukreti@...omium.org>
Cc:     dm-devel@...hat.com, linux-block@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, Jens Axboe <axboe@...nel.dk>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Stefan Hajnoczi <stefanha@...hat.com>,
        Alasdair Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...nel.org>,
        Christoph Hellwig <hch@...radead.org>,
        Brian Foster <bfoster@...hat.com>,
        Theodore Ts'o <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        Bart Van Assche <bvanassche@...gle.com>,
        "Darrick J. Wong" <djwong@...nel.org>
Subject: Re: [PATCH v7 0/5] Introduce provisioning primitives

FYI, I really don't think this primitive is a good idea.  In the
concept of non-overwritable storage (NAND, SMR drives) the entire
concept of a one-shoot 'provisioning' that will guarantee later writes
are always possible is simply bogus.