From: Christoph Hellwig <hch@lst.de>
To: Chaitanya Kulkarni <kch@nvidia.com>
Cc: linux-block@vger.kernel.org, linux-raid@vger.kernel.org,
linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org,
axboe@kernel.dk, agk@redhat.com, song@kernel.org,
djwong@kernel.org, kbusch@kernel.org, hch@lst.de,
sagi@grimberg.me, jejb@linux.ibm.com, martin.petersen@oracle.com,
viro@zeniv.linux.org.uk, javier@javigon.com,
johannes.thumshirn@wdc.com, bvanassche@acm.org,
dongli.zhang@oracle.com, ming.lei@redhat.com,
willy@infradead.org, jefflexu@linux.alibaba.com,
josef@toxicpanda.com, clm@fb.com, dsterba@suse.com,
jack@suse.com, tytso@mit.edu, adilger.kernel@dilger.ca,
jlayton@kernel.org, idryomov@gmail.com,
danil.kipnis@cloud.ionos.com, ebiggers@google.com,
jinpu.wang@cloud.ionos.com
Subject: Re: [PATCH 1/6] block: add support for REQ_OP_VERIFY
Date: Tue, 5 Jul 2022 10:34:16 +0200 [thread overview]
Message-ID: <20220705083416.GA19123@lst.de> (raw)
In-Reply-To: <20220630091406.19624-2-kch@nvidia.com>
On Thu, Jun 30, 2022 at 02:14:01AM -0700, Chaitanya Kulkarni wrote:
> This adds a new block layer operation to offload verifying a range of
> LBAs. This support is needed in order to provide file systems and
> fabrics, kernel components to offload LBA verification when it is
> supported by the hardware controller. In case hardware offloading is
> not supported then we provide API to emulate the same. The prominent
> example of that is SCSI and NVMe Verify command. We also provide
> an emulation of the same operation that can be used in case H/W does
> not support verify. This is still useful when block device is remotely
> attached e.g. using NVMeOF.
What is the point of providing the offload?
next prev parent reply other threads:[~2022-07-05 8:34 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-30 9:14 [PATCH 0/6] block: add support for REQ_OP_VERIFY Chaitanya Kulkarni
2022-06-30 9:14 ` [PATCH 1/6] " Chaitanya Kulkarni
2022-06-30 16:18 ` Darrick J. Wong
2022-07-05 16:50 ` Chaitanya Kulkarni
2022-07-05 17:57 ` Darrick J. Wong
2022-07-06 1:32 ` Chaitanya Kulkarni
2022-07-05 8:34 ` Christoph Hellwig [this message]
2022-07-05 23:55 ` Chaitanya Kulkarni
2022-06-30 9:14 ` [PATCH 2/6] nvme: add support for the Verify command Chaitanya Kulkarni
2022-06-30 16:24 ` Keith Busch
2022-07-05 8:34 ` Christoph Hellwig
2022-07-05 23:56 ` Chaitanya Kulkarni
2022-06-30 9:14 ` [PATCH 3/6] nvmet: add Verify command support for bdev-ns Chaitanya Kulkarni
2022-06-30 9:14 ` [PATCH 4/6] nvmet: add Verify emulation " Chaitanya Kulkarni
2022-07-05 8:35 ` Christoph Hellwig
2022-07-06 0:00 ` Chaitanya Kulkarni
2022-06-30 9:14 ` [PATCH 5/6] nvmet: add verify emulation support for file-ns Chaitanya Kulkarni
2022-07-05 8:36 ` Christoph Hellwig
2022-07-06 0:06 ` Chaitanya Kulkarni
2022-06-30 9:14 ` [PATCH 6/6] null_blk: add REQ_OP_VERIFY support Chaitanya Kulkarni
2022-07-05 8:38 ` [PATCH 0/6] block: add support for REQ_OP_VERIFY Christoph Hellwig
2022-07-05 16:47 ` Chaitanya Kulkarni
2022-07-06 17:42 ` Matthew Wilcox
2022-07-13 9:14 ` Chaitanya Kulkarni
2022-07-13 9:36 ` Johannes Thumshirn
2022-07-13 12:17 ` Matthew Wilcox
2022-07-13 14:04 ` Keith Busch
2022-12-01 18:12 ` Chaitanya Kulkarni
2022-12-01 19:39 ` Matthew Wilcox
2022-12-02 7:16 ` Hannes Reinecke
2022-12-02 14:58 ` Keith Busch
2022-12-02 17:33 ` Clay Mayers
2022-12-02 18:58 ` Keith Busch
2022-12-09 4:52 ` Martin K. Petersen
2022-12-10 13:06 ` Carlos Carvalho
2022-12-12 6:30 ` hch
2022-12-03 4:19 ` Javier González
2022-12-04 20:29 ` Keith Busch
2022-12-08 20:06 ` Javier González
2022-12-08 20:02 ` Matthew Wilcox
2022-12-02 7:13 ` Hannes Reinecke
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