From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Dave Chinner <david@fromorbit.com>
Cc: Sarthak Kukreti <sarthakkukreti@chromium.org>,
Mike Snitzer <snitzer@kernel.org>,
Joe Thornber <thornber@redhat.com>, Jens Axboe <axboe@kernel.dk>,
Christoph Hellwig <hch@infradead.org>,
Theodore Ts'o <tytso@mit.edu>,
dm-devel@redhat.com, "Michael S. Tsirkin" <mst@redhat.com>,
"Darrick J. Wong" <djwong@kernel.org>,
Brian Foster <bfoster@redhat.com>,
Bart Van Assche <bvanassche@google.com>,
linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
Joe Thornber <ejt@redhat.com>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Stefan Hajnoczi <stefanha@redhat.com>,
linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,
Jason Wang <jasowang@redhat.com>,
Alasdair Kergon <agk@redhat.com>
Subject: Re: [PATCH v7 0/5] Introduce provisioning primitives
Date: Wed, 07 Jun 2023 22:03:40 -0400 [thread overview]
Message-ID: <yq1sfb21zsa.fsf@ca-mkp.ca.oracle.com> (raw)
In-Reply-To: <ZHqOvq3ORETQB31m@dread.disaster.area> (Dave Chinner's message of "Sat, 3 Jun 2023 10:52:14 +1000")
Dave,
> Possibly unintentionally, I didn't call it REQ_OP_PROVISION but that's
> what I intended - the operation does not contain data at all. It's an
> operation like REQ_OP_DISCARD or REQ_OP_WRITE_ZEROS - it contains a
> range of sectors that need to be provisioned (or discarded), and
> nothing else.
Yep. That's also how SCSI defines it. The act of provisioning a block
range is done through an UNMAP command using a special flag. All it does
is pin down those LBAs so future writes to them won't result in ENOSPC.
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2023-06-08 2:04 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-18 22:33 [PATCH v7 0/5] Introduce provisioning primitives Sarthak Kukreti
2023-05-18 22:33 ` [PATCH v7 1/5] block: Don't invalidate pagecache for invalid falloc modes Sarthak Kukreti
2023-05-19 4:09 ` Christoph Hellwig
2023-05-19 15:17 ` Darrick J. Wong
2023-05-18 22:33 ` [PATCH v7 2/5] block: Introduce provisioning primitives Sarthak Kukreti
2023-05-19 4:18 ` Christoph Hellwig
2023-06-09 20:00 ` Mike Snitzer
2023-05-18 22:33 ` [PATCH v7 3/5] dm: Add block provisioning support Sarthak Kukreti
2023-05-18 22:33 ` [PATCH v7 4/5] dm-thin: Add REQ_OP_PROVISION support Sarthak Kukreti
2023-05-19 15:23 ` Mike Snitzer
2023-06-08 21:24 ` Mike Snitzer
2023-06-09 0:28 ` Mike Snitzer
2023-05-18 22:33 ` [PATCH v7 5/5] loop: Add support for provision requests Sarthak Kukreti
2023-05-22 16:37 ` [dm-devel] " Darrick J. Wong
2023-05-22 22:09 ` Sarthak Kukreti
2023-05-23 1:22 ` Darrick J. Wong
2023-10-07 1:29 ` Sarthak Kukreti
2023-05-19 4:09 ` [PATCH v7 0/5] Introduce provisioning primitives Christoph Hellwig
2023-05-19 14:41 ` Mike Snitzer
2023-05-19 23:07 ` Dave Chinner
2023-05-22 18:27 ` Mike Snitzer
2023-05-23 14:05 ` Brian Foster
2023-05-23 15:26 ` Mike Snitzer
2023-05-24 0:40 ` Dave Chinner
2023-05-24 20:02 ` Mike Snitzer
2023-05-25 11:39 ` Dave Chinner
2023-05-25 16:00 ` Mike Snitzer
2023-05-25 22:47 ` Sarthak Kukreti
2023-05-26 1:36 ` Dave Chinner
2023-05-26 2:35 ` Sarthak Kukreti
2023-05-26 15:56 ` Brian Foster
2023-05-25 16:19 ` Brian Foster
2023-05-26 9:37 ` Dave Chinner
2023-05-26 15:47 ` Brian Foster
[not found] ` <CAJ0trDbspRaDKzTzTjFdPHdB9n0Q9unfu1cEk8giTWoNu3jP8g@mail.gmail.com>
2023-05-26 23:45 ` Dave Chinner
[not found] ` <CAJ0trDZJQwvAzngZLBJ1hB0XkQ1HRHQOdNQNTw9nK-U5i-0bLA@mail.gmail.com>
2023-05-30 14:02 ` Mike Snitzer
[not found] ` <CAJ0trDaUOevfiEpXasOESrLHTCcr=oz28ywJU+s+YOiuh7iWow@mail.gmail.com>
2023-05-30 15:28 ` Mike Snitzer
2023-06-02 18:44 ` Sarthak Kukreti
2023-06-02 21:50 ` Mike Snitzer
2023-06-03 0:52 ` Dave Chinner
2023-06-03 15:57 ` Mike Snitzer
2023-06-05 21:14 ` Sarthak Kukreti
2023-06-07 2:15 ` Dave Chinner
2023-06-07 23:27 ` Mike Snitzer
2023-06-09 20:31 ` Mike Snitzer
2023-06-09 21:54 ` Dave Chinner
2023-10-07 1:30 ` Sarthak Kukreti
2023-06-07 2:01 ` Dave Chinner
2023-06-07 23:50 ` Mike Snitzer
2023-06-09 3:32 ` Dave Chinner
2023-06-08 2:03 ` Martin K. Petersen [this message]
2023-06-09 0:10 ` Dave Chinner
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