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Date: Sun, 14 Dec 2014 19:15:57 +0100
From: Milan Broz <gmazyland@gmail.com>
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Subject: Re: [dm-crypt] question
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To: Matthias Schniedermeyer <ms@citd.de>, "Sayler, Craig A. (AFRC-MI)[InuTeq, LLC]" <craig.a.sayler@nasa.gov>
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On 12/11/2014 11:04 PM, Matthias Schniedermeyer wrote:
> 
> The unsafe(!) 'inplace' method (that as an advantage doesn't need 
> additional storage):
> Just open the container normally, 'dd' the mapped container over the 
> backing device and pray that process isn't interruped. Because it will 
> be a huge PITA if it gets interruped.

Just FYI...

I wonder why I did not add this option "permanently decrypt" to cryptsetup-reencrypt.

Reencrypt tool uses similar approach to dd just it can be safely interrupted
and restarted.

Added enhancement issue for it
https://code.google.com/p/cryptsetup/issues/detail?id=236

Milan