From: Eric Sandeen <sandeen@redhat.com>
To: Karsten Hopp <karsten@redhat.com>
Cc: Theodore Tso <tytso@mit.edu>,
linux-ext4@vger.kernel.org, dm-crypt@saout.de
Subject: Re: Patch to support LUKS UUIDs in libblkid
Date: Tue, 03 Jul 2007 10:57:57 -0500 [thread overview]
Message-ID: <468A7205.4010509@redhat.com> (raw)
In-Reply-To: <468A149B.60700@redhat.com>
Karsten Hopp wrote:
> 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.
We fought this for a while in xfs, trying to be sure we wipe out old fs
signatures at mkfs time. It'd be nice to have a library to do such
things...
-Eric
next prev parent reply other threads:[~2007-07-03 16:00 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-05 11:23 Patch to support LUKS UUIDs in libblkid Karsten Hopp
2007-06-05 14:20 ` Eric Sandeen
2007-06-05 23:17 ` Andreas Dilger
2007-06-08 15:36 ` Theodore Tso
2007-06-11 11:51 ` Karsten Hopp
2007-06-12 23:40 ` Theodore Tso
2007-06-13 11:00 ` Karsten Hopp
2007-06-21 17:56 ` Theodore Tso
2007-07-03 9:19 ` Karsten Hopp
2007-07-03 15:57 ` Eric Sandeen [this message]
[not found] ` <46964694.7000707@redhat.com>
2007-07-23 15:00 ` Karsten Hopp
2007-07-23 16:19 ` Theodore Tso
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