Re: not all volume types export UUIDs (was: /dev/disk/by-id

[Kay Sievers <kay.sievers@vrfy.org>]

On Thu, 2008-07-03 at 06:42 -0700, Matthew Dharm wrote:
> 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.
> > > 
> > > 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?
> > > 
> > > 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.
> > 
> > So, what id's/symlinks is the same disk showing for ATA and USB in your
> > case?
> > 
> > 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?

No, that is replaced by /dev/disk/by-label/*

Thanks,
Kay