From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <corsac@debian.org>
Received: from smtp3-g21.free.fr (smtp3-g21.free.fr [212.27.42.3])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by mail.server123.net (Postfix) with ESMTPS
 for <dm-crypt@saout.de>; Mon,  4 Jan 2016 22:31:17 +0100 (CET)
Received: from molly.corsac.net (unknown
 [IPv6:2a01:e34:ec2f:4e20:ff:ff:fe00:5])
 by smtp3-g21.free.fr (Postfix) with ESMTPS id 40716A6292
 for <dm-crypt@saout.de>; Mon,  4 Jan 2016 22:30:30 +0100 (CET)
Received: from scapa.corsac.net (unknown
 [IPv6:2a01:e34:ec2f:4e20:a897:3c73:6f44:6f65])
 by molly.corsac.net (Postfix) with ESMTPS id E850C70
 for <dm-crypt@saout.de>; Mon,  4 Jan 2016 22:31:11 +0100 (CET)
Message-ID: <1451943067.3914.4.camel@debian.org>
From: Yves-Alexis Perez <corsac@debian.org>
Date: Mon, 04 Jan 2016 22:31:07 +0100
Content-Type: multipart/signed; micalg="pgp-sha256";
 protocol="application/pgp-signature"; boundary="=-RqugTAbYq1usT/l8hCVF"
Mime-Version: 1.0
Subject: [dm-crypt] Alignment issue with 4K disk
List-Id: <dm-crypt.saout.de>
List-Unsubscribe: <http://www.saout.de/mailman/options/dm-crypt>,
 <mailto:dm-crypt-request@saout.de?subject=unsubscribe>
List-Archive: <http://www.saout.de/pipermail/dm-crypt/>
List-Post: <mailto:dm-crypt@saout.de>
List-Help: <mailto:dm-crypt-request@saout.de?subject=help>
List-Subscribe: <http://www.saout.de/mailman/listinfo/dm-crypt>,
 <mailto:dm-crypt-request@saout.de?subject=subscribe>
To: dm-crypt@saout.de


--=-RqugTAbYq1usT/l8hCVF
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Hi,

I'm trying to setup an encrypted volume on an external disk which has 4k
physical sector size (with 512b logical sector size).

I've used various parted option (-a none / minimal / optimal) and various -=
-
align-payload options to cryptsetup, but everytime I luksOpen the container=
, I
get a kernel log with:

janv. 04 22:25:04 scapa kernel: device-mapper: table: 253:4: adding target =
device sdb1 caused an alignment inconsistency: physical_block_size=3D4096, =
logical_block_size=3D512, alignment_offset=3D0, start=3D4194304

(argument for start=3D changes for different values of the --align-payload)

I'm not sure it's really serious, but any idea how to fix that?

Regards,
--=20
Yves-Alexis


--=-RqugTAbYq1usT/l8hCVF
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: This is a digitally signed message part

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2

iQEcBAABCAAGBQJWiuSbAAoJEG3bU/KmdcClmvoH/R/zUvij752Jd7mNG4sucV06
kWscLRuiYNipK/xorPlr/zmiCxteKtjw2fdhlwzEUR/vcZOSoZCYmPI/DGH5sv8S
mXcr6CNWjRwvQfhXiC2pekNaY7HyN4x5cw5T2zf01DU13gIoNVe0WRQZ3+V8nugm
kLHR4LlvJDK9Q1sSrdZ/eShDsXrITJhlueSFEQx7a4hndJK1Uvrc9zlsgcKfXAfU
oGxoBGQFpC41tYZ2n4uNxiUkb+8cErLoeD/sk9e5R5OKEGnp1P08UK4eyYoQqOpX
rFpk6bzzVdUA/LE3F139bT/f/X3yrxh5gidN7KhqYtPQ/hfgjJh8mtlhFY0dan8=
=USV6
-----END PGP SIGNATURE-----

--=-RqugTAbYq1usT/l8hCVF--