[dm-crypt] Move from basic dm-crypt to LUKS

[dm-crypt] Move from basic dm-crypt to LUKS

[Alberto Gonzalez Iniesta]

Hi all,

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?


Thanks,

Alberto
Please Cc: on answers since I'm not subscribed.



[1] http://code.google.com/p/cryptsetup/wiki/FrequentlyAskedQuestions#2._Setup
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Alberto Gonzalez Iniesta    | Formación, consultoría y soporte técnico
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Re: [dm-crypt] Move from basic dm-crypt to LUKS

[Milan Broz]

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