Re: Encrypted Volume on SoftRaid5 got currupt at powerloss

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On 23/01/2008 Hans Huber wrote:
> > Anyone who is able to analyse this, please post here.
> I already offered you my help in a mail to you.
> 
> Send me the key and the first 5(?) MB of /dev/mapper/<logicalvolume> (as
> your cryptsetup is above raid5 and above lvm) and a md5sum of both.

Hey Hans,

I'm part of the group that maintains cryptsetup in Debian: www.debian.org

Back in July 2007 we got a bugreport which suggests to provide some
'repair tools' for cryptsetup because of several data corruption issues
cryptsetup and/or the linux dm-crypt/device-mapper implementation has.

You can find the relevant bug report at http://bugs.debian.org/432150

Now from what i read in your mails, it seems like you have some
experience with salvation/reconstruction of the luks header.

could you elaborate on the methods you use, maybe in a way that
could be automated in a script?

thanks in advance,
 jonas


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