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Date: Sat, 26 Jun 2010 17:03:08 +0200
From: Milan Broz <mbroz@redhat.com>
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Subject: Re: [dm-crypt] Move from basic dm-crypt to LUKS
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To: Alberto Gonzalez Iniesta <agi@inittab.org>
Cc: dm-crypt@saout.de

On 06/17/2010 07:02 PM, Alberto Gonzalez Iniesta wrote:
> I created a plain dm-crypt mapping on my laptop HD, when (later) I found
> I actually wanted a LUKS one. I know [1] I cannot migrate from
> no-encryption to LUKS (without backup/restore). But can I move my basic
> dm-crypt partition to use LUKS, or am I doomed to backup/restore?

You have to backup/restore. LUKS metadata are located at start of device,
plain dm-crypt have no metadata there. (So the LUKS device will be even smaller
of this metadata area.)

Milan