From: Mike Snitzer <snitzer@kernel.org>
To: Christoph Hellwig <hch@infradead.org>
Cc: Jens Axboe <axboe@kernel.dk>, Theodore Ts'o <tytso@mit.edu>,
Stefan Hajnoczi <stefanha@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Darrick J. Wong" <djwong@kernel.org>,
Jason Wang <jasowang@redhat.com>,
Bart Van Assche <bvanassche@google.com>,
linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
dm-devel@redhat.com, Andreas Dilger <adilger.kernel@dilger.ca>,
Sarthak Kukreti <sarthakkukreti@chromium.org>,
linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,
Brian Foster <bfoster@redhat.com>,
Alasdair Kergon <agk@redhat.com>
Subject: Re: [dm-devel] [PATCH v7 0/5] Introduce provisioning primitives
Date: Fri, 19 May 2023 10:41:31 -0400 [thread overview]
Message-ID: <ZGeKm+jcBxzkMXQs@redhat.com> (raw)
In-Reply-To: <ZGb2Xi6O3i2pLam8@infradead.org>
On Fri, May 19 2023 at 12:09P -0400,
Christoph Hellwig <hch@infradead.org> wrote:
> 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.
Valid point for sure, such storage shouldn't advertise support (and
will return -EOPNOTSUPP).
But the primitive still has utility for other classes of storage.
--
dm-devel mailing list
dm-devel@redhat.com
https://listman.redhat.com/mailman/listinfo/dm-devel
WARNING: multiple messages have this Message-ID (diff)
From: Mike Snitzer <snitzer@kernel.org>
To: Christoph Hellwig <hch@infradead.org>
Cc: Sarthak Kukreti <sarthakkukreti@chromium.org>,
dm-devel@redhat.com, linux-block@vger.kernel.org,
linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org, Jens Axboe <axboe@kernel.dk>,
"Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
Stefan Hajnoczi <stefanha@redhat.com>,
Alasdair Kergon <agk@redhat.com>,
Brian Foster <bfoster@redhat.com>, Theodore Ts'o <tytso@mit.edu>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Bart Van Assche <bvanassche@google.com>,
"Darrick J. Wong" <djwong@kernel.org>
Subject: Re: [PATCH v7 0/5] Introduce provisioning primitives
Date: Fri, 19 May 2023 10:41:31 -0400 [thread overview]
Message-ID: <ZGeKm+jcBxzkMXQs@redhat.com> (raw)
In-Reply-To: <ZGb2Xi6O3i2pLam8@infradead.org>
On Fri, May 19 2023 at 12:09P -0400,
Christoph Hellwig <hch@infradead.org> wrote:
> 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.
Valid point for sure, such storage shouldn't advertise support (and
will return -EOPNOTSUPP).
But the primitive still has utility for other classes of storage.
next prev parent reply other threads:[~2023-05-19 14:41 UTC|newest]
Thread overview: 107+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-18 22:33 [dm-devel] [PATCH v7 0/5] Introduce provisioning primitives Sarthak Kukreti
2023-05-18 22:33 ` Sarthak Kukreti
2023-05-18 22:33 ` [dm-devel] [PATCH v7 1/5] block: Don't invalidate pagecache for invalid falloc modes Sarthak Kukreti
2023-05-18 22:33 ` Sarthak Kukreti
2023-05-19 4:09 ` [dm-devel] " Christoph Hellwig
2023-05-19 4:09 ` Christoph Hellwig
2023-05-19 15:17 ` [dm-devel] " Darrick J. Wong
2023-05-19 15:17 ` Darrick J. Wong
2023-05-18 22:33 ` [dm-devel] [PATCH v7 2/5] block: Introduce provisioning primitives Sarthak Kukreti
2023-05-18 22:33 ` Sarthak Kukreti
2023-05-19 4:18 ` [dm-devel] " Christoph Hellwig
2023-05-19 4:18 ` Christoph Hellwig
2023-06-09 20:00 ` [dm-devel] " Mike Snitzer
2023-06-09 20:00 ` Mike Snitzer
2023-05-18 22:33 ` [dm-devel] [PATCH v7 3/5] dm: Add block provisioning support Sarthak Kukreti
2023-05-18 22:33 ` Sarthak Kukreti
2023-05-18 22:33 ` [dm-devel] [PATCH v7 4/5] dm-thin: Add REQ_OP_PROVISION support Sarthak Kukreti
2023-05-18 22:33 ` Sarthak Kukreti
2023-05-19 15:23 ` [dm-devel] " Mike Snitzer
2023-05-19 15:23 ` Mike Snitzer
2023-06-08 21:24 ` [dm-devel] " Mike Snitzer
2023-06-08 21:24 ` Mike Snitzer
2023-06-09 0:28 ` [dm-devel] " Mike Snitzer
2023-06-09 0:28 ` Mike Snitzer
2023-05-18 22:33 ` [dm-devel] [PATCH v7 5/5] loop: Add support for provision requests Sarthak Kukreti
2023-05-18 22:33 ` Sarthak Kukreti
2023-05-22 16:37 ` [dm-devel] " Darrick J. Wong
2023-05-22 16:37 ` Darrick J. Wong
2023-05-22 22:09 ` Sarthak Kukreti
2023-05-22 22:09 ` Sarthak Kukreti
2023-05-23 1:22 ` [dm-devel] " Darrick J. Wong
2023-05-23 1:22 ` Darrick J. Wong
2023-10-07 1:29 ` [dm-devel] " Sarthak Kukreti
2023-10-07 1:29 ` Sarthak Kukreti
2023-05-19 4:09 ` [dm-devel] [PATCH v7 0/5] Introduce provisioning primitives Christoph Hellwig
2023-05-19 4:09 ` Christoph Hellwig
2023-05-19 14:41 ` Mike Snitzer [this message]
2023-05-19 14:41 ` Mike Snitzer
2023-05-19 23:07 ` [dm-devel] " Dave Chinner
2023-05-19 23:07 ` Dave Chinner
2023-05-22 18:27 ` [dm-devel] " Mike Snitzer
2023-05-22 18:27 ` Mike Snitzer
2023-05-23 14:05 ` [dm-devel] " Brian Foster
2023-05-23 14:05 ` Brian Foster
2023-05-23 15:26 ` [dm-devel] " Mike Snitzer
2023-05-23 15:26 ` Mike Snitzer
2023-05-24 0:40 ` [dm-devel] " Dave Chinner
2023-05-24 0:40 ` Dave Chinner
2023-05-24 20:02 ` [dm-devel] " Mike Snitzer
2023-05-24 20:02 ` Mike Snitzer
2023-05-25 11:39 ` [dm-devel] " Dave Chinner
2023-05-25 11:39 ` Dave Chinner
2023-05-25 16:00 ` [dm-devel] " Mike Snitzer
2023-05-25 16:00 ` Mike Snitzer
2023-05-25 22:47 ` [dm-devel] " Sarthak Kukreti
2023-05-25 22:47 ` Sarthak Kukreti
2023-05-26 1:36 ` [dm-devel] " Dave Chinner
2023-05-26 1:36 ` Dave Chinner
2023-05-26 2:35 ` [dm-devel] " Sarthak Kukreti
2023-05-26 2:35 ` Sarthak Kukreti
2023-05-26 15:56 ` [dm-devel] " Brian Foster
2023-05-26 15:56 ` Brian Foster
2023-05-25 16:19 ` [dm-devel] " Brian Foster
2023-05-25 16:19 ` Brian Foster
2023-05-26 9:37 ` [dm-devel] " Dave Chinner
2023-05-26 9:37 ` Dave Chinner
2023-05-26 11:04 ` [dm-devel] " Joe Thornber
2023-05-26 23:45 ` Dave Chinner
2023-05-26 23:45 ` Dave Chinner
2023-05-30 7:27 ` [dm-devel] " Joe Thornber
2023-05-30 14:02 ` Mike Snitzer
2023-05-30 14:02 ` Mike Snitzer
2023-05-30 14:55 ` [dm-devel] " Joe Thornber
2023-05-30 15:28 ` Mike Snitzer
2023-05-30 15:28 ` Mike Snitzer
2023-06-02 18:44 ` [dm-devel] " Sarthak Kukreti
2023-06-02 18:44 ` Sarthak Kukreti
2023-06-02 21:50 ` [dm-devel] " Mike Snitzer
2023-06-02 21:50 ` Mike Snitzer
2023-06-03 0:52 ` [dm-devel] " Dave Chinner
2023-06-03 0:52 ` Dave Chinner
2023-06-03 15:57 ` [dm-devel] " Mike Snitzer
2023-06-03 15:57 ` Mike Snitzer
2023-06-05 21:14 ` [dm-devel] " Sarthak Kukreti
2023-06-05 21:14 ` Sarthak Kukreti
2023-06-07 2:15 ` [dm-devel] " Dave Chinner
2023-06-07 2:15 ` Dave Chinner
2023-06-07 23:27 ` [dm-devel] " Mike Snitzer
2023-06-07 23:27 ` Mike Snitzer
2023-06-09 20:31 ` [dm-devel] " Mike Snitzer
2023-06-09 20:31 ` Mike Snitzer
2023-06-09 21:54 ` [dm-devel] " Dave Chinner
2023-06-09 21:54 ` Dave Chinner
2023-10-07 1:30 ` [dm-devel] " Sarthak Kukreti
2023-10-07 1:30 ` Sarthak Kukreti
2023-06-07 2:01 ` [dm-devel] " Dave Chinner
2023-06-07 2:01 ` Dave Chinner
2023-06-07 23:50 ` [dm-devel] " Mike Snitzer
2023-06-07 23:50 ` Mike Snitzer
2023-06-09 3:32 ` [dm-devel] " Dave Chinner
2023-06-09 3:32 ` Dave Chinner
2023-06-08 2:03 ` [dm-devel] " Martin K. Petersen
2023-06-08 2:03 ` Martin K. Petersen
2023-06-09 0:10 ` [dm-devel] " Dave Chinner
2023-06-09 0:10 ` Dave Chinner
2023-05-26 15:47 ` [dm-devel] " Brian Foster
2023-05-26 15:47 ` Brian Foster
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