From: Joerg Schilling <schilling@fokus.fraunhofer.de>
Date: Mon, 30 Jan 2006 17:15:20 +0100
To: schilling@fokus.fraunhofer.de, mrmacman_g4@mac.com,
       linux-kernel@vger.kernel.org, jengelh@linux01.gwdg.de,
       James@superbug.co.uk, hch@infradead.org, acahalan@gmail.com,
       "unlisted-recipients:; "@pop3.mail.demon.net
Subject: Re: CD writing in future Linux (stirring up a hornets' nest)
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Christoph Hellwig <hch@infradead.org> wrote:

> On Mon, Jan 30, 2006 at 01:04:08PM +0100, Matthias Andree wrote:
> > Why is it a *kernel* task to invent SCSI identifier for a non-SCSI
> > transport that does not have such identifiers, in addition to the device
> > name? libscg is already doing it for /dev/hd* and /dev/pg*.
> > How about USB or Firewire or SATA? Do they have ID or LUN?
>
> Nothing but SPI (parallel scsi) has a target id.  Everything that broadly
> falls under SAM has luns.  Because SPI is dying transport the scsi
> midlayer will get rid of having a mandatory target id mid-term.  Relying
> on the target id to have any useful meaning is dangerous, it doesn't
> have a really useful meaning on anything but SPI.

And now please tell me how you believe this will be inplemented.....

Every kernel implementation I am aware of uses device instance numbers
and BTW: I am open for any non-dogmatic discussion.


J?rg

-- 
 EMail:joerg@schily.isdn.cs.tu-berlin.de (home) J?rg Schilling D-13353 Berlin
       js@cs.tu-berlin.de                (uni)  
       schilling@fokus.fraunhofer.de     (work) Blog: http://schily.blogspot.com/
 URL:  http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily
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