From: Arno Wagner <arno@wagner.name>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] question
Date: Sun, 14 Dec 2014 21:23:30 +0100 [thread overview]
Message-ID: <20141214202330.GA12006@tansi.org> (raw)
In-Reply-To: <548DD3DD.2090502@gmail.com>
On Sun, Dec 14, 2014 at 19:15:57 CET, Milan Broz wrote:
> 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.
This was likely just too obvious. Oversights like that happen to
me too.
> Reencrypt tool uses similar approach to dd just it can be safely
> interrupted and restarted.
Difference here would be that overwriting the header area
would need to be done last and data needs to be shifted
forward by the data-offset. Having a header-sized unused
area at the end should be non-critical.
> Added enhancement issue for it
> https://code.google.com/p/cryptsetup/issues/detail?id=236
Excellent.
Arno
> Milan
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--
Arno Wagner, Dr. sc. techn., Dipl. Inform., Email: arno@wagner.name
GnuPG: ID: CB5D9718 FP: 12D6 C03B 1B30 33BB 13CF B774 E35C 5FA1 CB5D 9718
----
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next prev parent reply other threads:[~2014-12-14 20:23 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-11 18:30 [dm-crypt] question Sayler, Craig A. (AFRC-MI)[InuTeq, LLC]
2014-12-11 22:04 ` Matthias Schniedermeyer
2014-12-11 22:07 ` Sayler, Craig A. (AFRC-MI)[InuTeq, LLC]
2014-12-11 22:54 ` Matthias Schniedermeyer
2014-12-12 12:12 ` Arno Wagner
2014-12-12 12:11 ` Arno Wagner
2014-12-12 12:59 ` Matthias Schniedermeyer
2014-12-13 0:21 ` Arno Wagner
2014-12-14 18:15 ` Milan Broz
2014-12-14 20:23 ` Arno Wagner [this message]
-- strict thread matches above, loose matches on Subject: below --
2011-05-26 20:17 Guy Rachmuth
2011-05-27 12:14 ` Arno Wagner
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