[dm-crypt] How can a passphrase be incorrect even after `luksHeaderBackup` and `luksHeaderRestore`?

Arno Wagner arno at wagner.name
Fri Aug 5 16:52:29 CEST 2011


On Fri, Aug 05, 2011 at 04:16:47PM +0200, Milan Broz wrote:
> On 08/05/2011 02:11 PM, Paul Menzel wrote:
> >> No, as from the output above, I do not see the same problem. What
> >> could be the reason for this difference in behaviour?
> > 
> > On #lvm Milan suggested that the problem lies with the new drive
> > having some misalignment
> 
> I have checked the dump and there is clear corruption of first keyslot
> (0x1000 - 0x1400 offset).
> 
> I'll try to find the source of problem now.
> 
> Milan

Hi Milan,

just a thought: May this be a stray v1.2 RAID/md superblock?
They are at 4k offset from the device start according to this:

https://raid.wiki.kernel.org/index.php/RAID_superblock_formats

Arno
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Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno at wagner.name 
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