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Date: Tue, 16 Jul 2002 13:59:20 +0200
From: Vojtech Pavlik <vojtech@suse.cz>
To: Joerg Schilling <schilling@fokus.gmd.de>
Cc: James.Bottomley@steeleye.com, linux-kernel@vger.kernel.org
Subject: Re: IDE/ATAPI in 2.5
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In-Reply-To: <200207161128.g6GBSJPE021316@burner.fokus.gmd.de>; from schilling@fokus.gmd.de on Tue, Jul 16, 2002 at 01:28:19PM +0200
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On Tue, Jul 16, 2002 at 01:28:19PM +0200, Joerg Schilling wrote:

> It would help, if somebody would correct the current SCSI addressng scheme used 
> in Linux. Linux currently uses something called BUS/channel/target/lun.
> This does not reflect reality.
> 
> What Linux calls a SCSI bus is definitely not a SCSI bus but a SCSI HBA card.
> What Linux calls a channel really is one of possibly more SCSI busses going
> off one of the SCSI HBA cards. It makes sense to just count SCSI busses.

Well, no. It doesn't. Because the numbers will change if you add a card
(even at runtime - hotplugging USB SCSI is something real happening
today. And that'd be a very bad thing.

The way it'll be done is that you'll get the device physical path (see
driverfs) to the device, the device serial number and other identifiers
and then a hotplug/system configuration agent will choose a nice name
for it (completely configurable).

-- 
Vojtech Pavlik
SuSE Labs
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