From: "hch@infradead.org" <hch@infradead.org>
To: Kanchan Joshi <joshi.k@samsung.com>
Cc: "hch@infradead.org" <hch@infradead.org>, Qu Wenruo <wqu@suse.com>,
Johannes Thumshirn <Johannes.Thumshirn@wdc.com>,
Theodore Ts'o <tytso@mit.edu>,
"lsf-pc@lists.linux-foundation.org"
<lsf-pc@lists.linux-foundation.org>,
"linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"josef@toxicpanda.com" <josef@toxicpanda.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>
Subject: Re: [LSF/MM/BPF TOPIC] File system checksum offload
Date: Wed, 19 Mar 2025 22:48:11 -0700 [thread overview]
Message-ID: <Z9usG3LELEWPYSUG@infradead.org> (raw)
In-Reply-To: <435cf6be-98e7-4b8b-ae42-e074091de991@samsung.com>
On Wed, Mar 19, 2025 at 11:36:28PM +0530, Kanchan Joshi wrote:
> I tried to describe that in the cover letter of the PoC:
> https://lore.kernel.org/linux-btrfs/20250129140207.22718-1-joshi.k@samsung.com/
I don't think it does as people have pointed that out multiple times.
Once you do checksums on the device they are not end to end, either in
the T10 DIF definition or that of file system checksums. You leave a
huge glaring gap in the protection envelope. So calling this "offload"
is extremely dishonest and misleading.
next prev parent reply other threads:[~2025-03-20 5:48 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20250130092400epcas5p1a3a9d899583e9502ed45fe500ae8a824@epcas5p1.samsung.com>
2025-01-30 9:15 ` [LSF/MM/BPF TOPIC] File system checksum offload Kanchan Joshi
2025-01-30 14:28 ` Theodore Ts'o
2025-01-30 20:39 ` [Lsf-pc] " Martin K. Petersen
2025-01-31 4:40 ` Theodore Ts'o
2025-01-31 7:07 ` Christoph Hellwig
2025-01-31 13:11 ` Kanchan Joshi
2025-02-03 7:47 ` Johannes Thumshirn
2025-02-03 7:56 ` Christoph Hellwig
2025-02-03 8:04 ` Johannes Thumshirn
2025-02-03 8:06 ` hch
2025-02-03 8:16 ` Qu Wenruo
2025-02-03 8:26 ` Matthew Wilcox
2025-02-03 8:30 ` hch
2025-02-03 8:36 ` Qu Wenruo
2025-02-03 8:40 ` hch
2025-02-03 8:51 ` Qu Wenruo
2025-02-03 8:57 ` hch
2025-02-03 8:26 ` hch
2025-02-03 13:27 ` Kanchan Joshi
2025-02-03 23:17 ` Qu Wenruo
2025-02-04 5:48 ` hch
2025-02-04 5:16 ` hch
2025-03-18 7:06 ` Kanchan Joshi
2025-03-18 8:07 ` hch
2025-03-19 18:06 ` Kanchan Joshi
2025-03-20 5:48 ` hch [this message]
2025-02-03 13:32 ` Kanchan Joshi
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