linux-ext4 - Re: Patch to support LUKS UUIDs in libblkid

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Date:	Tue, 03 Jul 2007 11:19:23 +0200
From:	Karsten Hopp <karsten@...hat.com>
To:	Theodore Tso <tytso@....edu>
CC:	linux-ext4@...r.kernel.org, dm-crypt@...ut.de
Subject: Re: Patch to support LUKS UUIDs in libblkid

Theodore Tso schrieb:
> Thanks, I've applied the blkid LUKS patch to the e2fsprogs SCM (modulo
> a minor whitespace breakage which I fixed up).
> 
> BTW, there appears to be a problem here in udev regarding LUKS
> identification:
> 
> https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/93921
> 
...

Thanks for applying the small patch !

FYI:
I've opened a bugzilla about your udev concerns to get some comments from our
and the upstream maintainer at
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=245717

Kay Sievers from the udev team responded:
#> That's nothing new. Guessing filesystems by magic bytes on the disk is by
#> definition unsafe.
#>
#> _All_ filesystem formatters are required to wipe out _all_ existing signatures
#> before applying a new signature. Even then, it's not entirely safe to probe, but
#> we obviously have no alternatives.
#>
#> Shuffling the probing order around will only switch the systems where such
#> problems occur. From my standpoint, you can close this "bug". Thanks!

So, no help from this side....

   Karsten

--
  Karsten Hopp        | Mail: karsten@...hat.de
  Red Hat Deutschland | Tel: +49-711-96437-0
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