From: Arno Wagner <arno@wagner.name>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] How can a passphrase be incorrect even after `luksHeaderBackup` and `luksHeaderRestore`?
Date: Fri, 5 Aug 2011 16:55:21 +0200 [thread overview]
Message-ID: <20110805145521.GC15345@tansi.org> (raw)
In-Reply-To: <20110805145229.GB15345@tansi.org>
On Fri, Aug 05, 2011 at 04:52:29PM +0200, Arno Wagner wrote:
> 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
>
And an additional thought: If using /etc/raidtab instead of
autodetection (or a similar mechanism), is it possible the
RAID superblock gets rewritten on boot and destroys the
LUKS keyslot?
I have no idea whether this is possible, as I only ever used
autodetection and distrust distro automagic even in Debian.
Arno
--
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno@wagner.name
GnuPG: ID: 1E25338F FP: 0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F
----
Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans
If it's in the news, don't worry about it. The very definition of
"news" is "something that hardly ever happens." -- Bruce Schneier
next prev parent reply other threads:[~2011-08-05 14:55 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-04 21:31 [dm-crypt] How can a passphrase be incorrect even after `luksHeaderBackup` and `luksHeaderRestore`? Paul Menzel
2011-08-04 23:18 ` Paul Menzel
2011-08-05 2:20 ` Milan Broz
2011-08-05 8:41 ` Paul Menzel
2011-08-05 12:11 ` Paul Menzel
2011-08-05 14:16 ` Milan Broz
2011-08-05 14:52 ` Arno Wagner
2011-08-05 14:55 ` Arno Wagner [this message]
2011-08-05 17:47 ` Milan Broz
2011-08-05 15:02 ` Paul Menzel
2011-08-05 15:08 ` Arno Wagner
2011-09-01 19:08 ` Paul Menzel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20110805145521.GC15345@tansi.org \
--to=arno@wagner.name \
--cc=dm-crypt@saout.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox