[dm-crypt] /dev/md1 is not a valid LUKS device

Arno Wagner arno at wagner.name
Mon Jul 4 23:10:24 CEST 2011

On Mon, Jul 04, 2011 at 05:45:23PM +0200, Louis-David Mitterrand wrote:
> Hi,
> After a hardware crash I now get this error:
> 	root at grml ~ # cryptsetup isLuks /dev/md1 
> 	Device /dev/md1 is not a valid LUKS device
> Am I basically fucked?

I assume you have no header backup? 

If so, possibly, but not necessarily. Is this on an SSD? There
the LUKS header could be in the same "sector" as a data area 
(due large SSD actual sector size)

Can you send me the first 700 bytes of the partition as hexdump?
You can get them for example like this:

  hd /dev/md1 | head -n 40


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