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Date: Mon, 28 Mar 2011 13:02:44 +0200
From: Milan Broz <mbroz@redhat.com>
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Subject: Re: [dm-crypt] LUKS Header and partition dimension
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To: Claudio Moretti <flyingstar16@gmail.com>
Cc: dm-crypt@saout.de

On 03/28/2011 12:41 PM, Claudio Moretti wrote:
> If the partition size has no relation with the disk unlocking, does
> it mean that somehow my LUKS header is corrupted (and therefore I'll
> be unable to unlock the disk, because I was so stupid I didn't backup
> the header)?

Unfortunately you probably just answered yourself.

Partition size (resp. partition end) is not important, you just need full
LUKS header starting in the beginning with not corrupted active keyslots
to unlock it. 

Also see
http://code.google.com/p/cryptsetup/wiki/FrequentlyAskedQuestions#6._Backup_and_Data_Recovery

Milan