Date: Sun, 14 Jul 2002 22:13:19 +0200 (CEST)
From: Joerg Schilling <schilling@fokus.gmd.de>
Message-Id: <200207142013.g6EKDJb5019442@burner.fokus.gmd.de>
To: Richard.Zidlicky@stud.informatik.uni-erlangen.de, schilling@fokus.gmd.de
Cc: andersen@codepoet.org, linux-kernel@vger.kernel.org
Subject: Re: IDE/ATAPI in 2.5
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1917
Lines: 50

>From: Richard Zidlicky <Richard.Zidlicky@stud.informatik.uni-erlangen.de>

> 
>> For a starter, it is easier to understand the SCSI concept of
>> addressing than to understand the Linux concept. In addition,
>> the SCSI addressing concept can be used on different platforms
>> in a unique way. This helps people (and GUI writers) to use 
>> cdrecord on more than Linux only.

>whether it is easier is matter of taste, however in a situation
>where the kernel and 99% of other applications refer to something
>as '/dev/scd0' I fail to see any benefit of having another scheme.
>Do you want to suggest that all other Linux apps should now use
>'-dev x,y,z' instead of normal device names?

Did I request this? No, definitely not. Hoewver, it helps a lot
if a GUI for cdrecord may use cdrecord to find potential drives
and if there is a unique addressing scheme.

BTW: did you ever look at Solaris / HP-UX, ... and the way they
name disks?

someting like: /dev/{r}dsk/c0t0d0s0

This is SCSI bus, target, lun and slice.

>There is another problem, with your scsi transport library you
>are bypassing normal Linux devices. Try
>  mount /dev/scd0 /mnt
>  cdrecord -dev 0,0,0 -blank=fast
>  ls -al /mnt

>Nice? It certainly isn't the fault of Linux if you choose to
>bypass normal device usage and it can be very annoying not
>only for beginners.

It is not a fault of cdrecord either.


J?rg

 EMail:joerg@schily.isdn.cs.tu-berlin.de (home) J?rg Schilling D-13353 Berlin
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