From: Christoph Anton Mitterer <christoph.anton.mitterer@physik.uni-muenchen.de>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] Efficacy of xts over 1TB
Date: Mon, 26 Jul 2010 20:35:56 +0200 [thread overview]
Message-ID: <1280169356.3266.94.camel@fermat.scientia.net> (raw)
In-Reply-To: <4C4CCBCC.1000102@redhat.com>
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On Mon, 2010-07-26 at 01:42 +0200, Milan Broz wrote:
> Device-mapper (and here dm-crypt too) always calculate size in 512b sectors,
> but is also device topology aware (it honors alignment/optimal io size for 4k hw sector).
>
> IOW sector in linux block level is always 512b but devices with 4k will work
> without problems (and with optimal aligned IOs)
Good to know :)
> You just cannot have dm-crypt using atomic crypto 4k units currently, it is just
> low-level hw sector size.
> (Maybe in future there could be option for that but it requires new LUKS header flags
> at least because such mode is incompatible.)
But that would also require support in the block layer and dm right?
Cheers,
Chris.
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next prev parent reply other threads:[~2010-07-26 18:35 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-22 14:57 [dm-crypt] Efficacy of xts over 1TB David Santamaría Rogado
2010-07-25 10:34 ` Arno Wagner
2010-07-25 11:18 ` Christoph Anton Mitterer
2010-07-25 12:29 ` Heinz Diehl
2010-07-25 12:25 ` Milan Broz
2010-07-25 13:14 ` Christoph Anton Mitterer
2010-07-25 13:52 ` Milan Broz
2010-07-25 22:37 ` Christoph Anton Mitterer
2010-07-26 0:14 ` Milan Broz
2010-07-26 20:38 ` Christoph Anton Mitterer
2010-07-27 8:46 ` [dm-crypt] Using plain64/plain IV (initialisation vector) in dm-crypt Milan Broz
2010-07-27 10:47 ` Arno Wagner
2010-07-27 14:17 ` Christoph Anton Mitterer
2010-07-27 16:08 ` Arno Wagner
2010-07-27 14:15 ` Christoph Anton Mitterer
2010-07-27 15:45 ` Mario 'BitKoenig' Holbe
2010-07-27 15:55 ` Milan Broz
2010-07-27 18:59 ` Christoph Anton Mitterer
2010-07-27 19:37 ` Arno Wagner
2010-07-27 18:58 ` Christoph Anton Mitterer
2010-07-27 19:35 ` Mario 'BitKoenig' Holbe
2010-07-28 8:42 ` Milan Broz
2010-08-20 21:11 ` [dm-crypt] XTS cipher mode limitations Christoph Anton Mitterer
2010-08-21 0:22 ` Arno Wagner
2010-08-22 12:50 ` [dm-crypt] XTS cipher mode limitations (FAQ additions) Christoph Anton Mitterer
2010-08-23 0:46 ` Arno Wagner
2010-08-25 9:36 ` Christoph Anton Mitterer
2010-08-22 12:56 ` [dm-crypt] tool to account the written number of bytes to a block device (was: XTS cipher mode limitations) Christoph Anton Mitterer
2010-08-22 16:01 ` Arno Wagner
2010-08-22 21:57 ` Christoph Anton Mitterer
2010-08-23 7:14 ` [dm-crypt] tool to account the written number of bytes to a block device Milan Broz
2010-08-25 9:27 ` Christoph Anton Mitterer
2010-08-24 16:19 ` [dm-crypt] XTS cipher mode limitations Ramius
2010-07-26 8:53 ` [dm-crypt] Efficacy of xts over 1TB Arno Wagner
2010-07-26 20:47 ` Christoph Anton Mitterer
2010-07-26 21:01 ` Arno Wagner
2010-07-26 21:28 ` Christoph Anton Mitterer
2010-07-26 21:35 ` Arno Wagner
2010-07-25 22:52 ` Christoph Anton Mitterer
2010-07-26 9:42 ` Mario 'BitKoenig' Holbe
2010-07-26 18:09 ` Arno Wagner
2010-07-27 18:16 ` [dm-crypt] Including the FAQ in the tarball? Christoph Anton Mitterer
2010-07-27 18:23 ` Arno Wagner
2010-07-29 8:17 ` Heinz Diehl
2010-07-25 15:32 ` [dm-crypt] Efficacy of xts over 1TB Arno Wagner
2010-07-25 22:48 ` Christoph Anton Mitterer
2010-07-25 23:42 ` Milan Broz
2010-07-26 18:35 ` Christoph Anton Mitterer [this message]
2010-07-25 15:28 ` Arno Wagner
2010-07-25 18:11 ` Milan Broz
2010-07-26 9:04 ` Mario 'BitKoenig' Holbe
2010-07-27 18:21 ` Christoph Anton Mitterer
2010-07-27 21:02 ` Mario 'BitKoenig' Holbe
2010-07-26 9:17 ` Mario 'BitKoenig' Holbe
2010-07-27 18:42 ` David Santamaría Rogado
-- strict thread matches above, loose matches on Subject: below --
2010-07-25 22:25 Ietf Nist
2010-07-25 22:41 ` Christoph Anton Mitterer
2010-07-26 21:07 Arno Wagner
2010-07-26 21:31 ` Christoph Anton Mitterer
2010-07-26 21:45 ` Arno Wagner
2010-07-26 21:42 ` Christoph Anton Mitterer
2010-07-26 22:55 ` Arno Wagner
2010-07-26 23:42 ` Mario 'BitKoenig' Holbe
2010-07-27 10:21 ` Arno Wagner
2010-08-15 17:26 ` Uwe Menges
2010-08-15 22:10 ` Arno Wagner
2010-08-16 11:44 ` Mario 'BitKoenig' Holbe
2010-08-16 12:39 ` Arno Wagner
2010-08-16 12:55 ` octane indice
2010-08-16 14:21 ` Arno Wagner
2010-08-21 20:45 ` Christoph Anton Mitterer
2010-08-21 23:14 ` Arno Wagner
2010-08-22 0:46 ` Christoph Anton Mitterer
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