From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Date: Thu, 03 Jul 2008 13:42:14 +0000
Subject: Re: not all volume types export UUIDs (was: /dev/disk/by-id symlinks should not include bus) type
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To: linux-hotplug@vger.kernel.org


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On Thu, Jul 03, 2008 at 11:02:46AM +0200, Kay Sievers wrote:
> On Thu, 2008-07-03 at 07:30 +0200, martin f krafft wrote:
> > also sprach Kay Sievers <kay.sievers@vrfy.org> [2008.07.02.1806 +0200]:
> > > All are only unique per namespace/bus, and should better not be
> > > mixed.
> >=20
> > Well, but that's my point I suppose. Why do we have to treat the
> > same drive differently, whether it's on the ATA bus or the USB bus?
> >=20
> > My reason for bringing this up was that I was trying to boot off
> > a harddrive via USB and had to change all the links, rather than
> > just watching the system boot off the same disk it has always booted
> > from.
>=20
> So, what id's/symlinks is the same disk showing for ATA and USB in your
> case?
>=20
> Only advanced USB bridges read the number from the actual disk, I have a
> bunch of enclosures here, which show all different id's for the same
> disk inserted. Also usb-storage needs to encode the target and lun
> number in the id, for multi-slot devices, so I do not think that will
> work.

Isn't devlabel the technology that is supposed to be used for this sort of
scenario?

Matt

--=20
Matthew Dharm                              Home: mdharm-usb@one-eyed-alien.=
net=20
Maintainer, Linux USB Mass Storage Driver

C:  They kicked your ass, didn't they?
S:  They were cheating!
					-- The Chief and Stef
User Friendly, 11/19/1997

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