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Date: Thu, 25 Feb 2016 18:35:42 +0100
From: Felix Wagner <felix@wagner-felix.com>
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Subject: Re: [dm-crypt] help
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To: Milan Broz <gmazyland@gmail.com>
Cc: Ondrej Kozina <okozina@redhat.com>, dm-crypt@saout.de

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Hello,

thank you very much after completing these steps I can access
everything again. (Now creating backup headers for all LUKS devices)

Again, thank you very much !






On Thu, 25 Feb 2016 18:20:55 +0100
Milan Broz <gmazyland@gmail.com> wrote:

> On 02/25/2016 06:05 PM, Felix Wagner wrote:
> > Hello,
> >=20
> > thanks for your replies. Yea, any of those files DO NOT exist
> > anywhere on my fs (I checked with find). I think the process didn't
> > really start.
> >=20
> > How do I continue then? =20
>=20
> ok, it is possible that you find a nasty bug...
> (using /dev/disk/uuid path seems to be not working).
>=20
> Try this (replace <LUKS_device> and <backup_file> appropriately):
>=20
> 1) backup current (invalidated) header to some file (just to be sure)
>=20
> dd if=3D<LUKS_device> of=3D<backup_file> bs=3D512 count=3D2056
>=20
> 2) recover magic string
>=20
> echo -n -e 'LUKS\xba\xbe' | dd of=3D<LUKS_device> bs=3D1 seek=3D0
> conv=3Dnotrunc
>=20
> ...
> and try to luksDump it, then luksOpen.
>=20
> Milan


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