From: Mikulas Patocka <mpatocka@redhat.com>
To: Axboe <axboe@kernel.dk>, Keith Busch <kbusch@kernel.org>,
Christoph Hellwig <hch@lst.de>, Sagi Grimberg <sagi@grimberg.me>,
Mike Snitzer <snitzer@kernel.org>,
Milan Broz <gmazyland@gmail.com>,
Anuj gupta <anuj1072538@gmail.com>
Cc: linux-block@vger.kernel.org, dm-devel@lists.linux.dev,
linux-nvme@lists.infradead.org
Subject: [PATCH 0/2 v4] dm-crypt support for per-sector NVMe metadata
Date: Mon, 27 May 2024 17:39:14 +0200 (CEST) [thread overview]
Message-ID: <719d2e-b0e6-663c-ec38-acf939e4a04b@redhat.com> (raw)
Hi
Here I'm resending the dm-crypt support for per-sector NVMe metadata. I
made some changes to the first patch as suggested by Christoph Hellwig.
The first patch fixes a bug when splitting a bio with attached metadata.
The second patch enables dm-crypt to use NVMe metadata for authenticated
encryption. dm-crypt can run directly on NVMe without using dm-integrity.
These patches increase write throughput twice, because there is no write
to the dm-integrity journal.
An example how to use it (so far, there is no support in the userspace
cryptsetup tool):
# nvme format /dev/nvme1 -n 1 -lbaf=4
# dmsetup create cr --table '0 1048576 crypt
capi:authenc(hmac(sha256),cbc(aes))-essiv:sha256
01b11af6b55f76424fd53fb66667c301466b2eeaf0f39fd36d26e7fc4f52ade2de4228e996f5ae2fe817ce178e77079d28e4baaebffbcd3e16ae4f36ef217298
0 /dev/nvme1n1 0 2 integrity:32:aead sector_size:4096'
Mikulas
next reply other threads:[~2024-05-27 15:39 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-27 15:39 Mikulas Patocka [this message]
2024-05-27 15:40 ` [PATCH 1/2 v4] block: change rq_integrity_vec to respect the iterator Mikulas Patocka
2024-05-28 3:47 ` Anuj gupta
2024-05-28 5:25 ` Kanchan Joshi
2024-05-28 6:34 ` Christoph Hellwig
2024-05-27 15:40 ` [PATCH 2/2 v4] dm-crypt: support for per-sector NVMe metadata Mikulas Patocka
2024-06-26 15:14 ` (subset) [PATCH 0/2 v4] dm-crypt " Jens Axboe
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