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To: Kurt Garloff <kurt@garloff.de>, Oliver Neukum <oliver@neukum.name>,
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Subject: Re: [garloff@suse.de: Re: [linux-usb-devel] Re: /proc/scsi/map] 
In-Reply-To: Message from Kurt Garloff <kurt@garloff.de> 
   of "Mon, 17 Jun 2002 03:24:00 +0200." <20020617012400.GH21461@gum01m.etpnet.phys.tue.nl> 
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From: James Bottomley <James.Bottomley@steeleye.com>
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kurt@garloff.de said:
> This may work for your disks. You just can't open the device node for
> a tape, if there is no medium inserted. If you know the mapping
> between to a sg device you can use it.

Actually, you have to use sg for a disc as well since you send a scsi CDB 
directly to the device for inquiry page 0x83.

> That's the second piece of information that /proc/scsi/map provides. 

Oh no question.  The way the current code doing this works is that it opens 
all scsi devices and issues a GET_IDLUN to compile a database of the nodes and 
then matches them up to sg nodes.

James


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