linux-kernel - Re: dm(-crypt) and /dev/disk/by-label/

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Message-ID: <Pine.LNX.4.61.0705142154110.9570@yvahk01.tjqt.qr>
Date:	Mon, 14 May 2007 21:55:47 +0200 (MEST)
From:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
To:	"Alexander E. Patrakov" <patrakov@....usu.ru>
cc:	Christian Hesse <mail@...thworm.de>, linux-kernel@...r.kernel.org
Subject: Re: dm(-crypt) and /dev/disk/by-label/

On May 14 2007 19:06, Alexander E. Patrakov wrote:
> Christian Hesse wrote:
>> Hello everybody,
>> 
>> I have ext3 filesystems with labels on devicemapper crypted devices. These
>> do not show up in /dev/disk/by-label/, in contrast to filesystems of my
>> "real" partitions. Is this the expected behaviour or what could go wrong?
>
> Some distributions intentionally tell udev to ignore device-mapper devices
> completely, for the following reasons:
>
> 1) without this prohibition, udev creates /dev/dm-* devices, and LILO breaks
> completely if they are present instead of the correct /dev/mapper/* nodes
> created by dmsetup and similar tools

Uhm, openSUSE does not have this prohibition. /dev/dm-\d+ exist,
/dev/mapper/\w+ exist, as do /dev/disk/by-label/\w+. Though,
it uses GRUB by default.

	Jan
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