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Move from basic dm-crypt to LUKS

dm-crypt Alberto Gonzalez Iniesta 2 participants 2 messages Jun 17, 2010 – Jun 26, 2010

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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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Quoted 4 lines · Alberto Gonzalez Iniesta

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