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SubjectRE: /proc/scsi/map
Date
From
>From an infiniband point of view, this sounds great!

--
Michael Heinz
Infinicon Systems, Inc.
http://www.infiniconsys.com

> -----Original Message-----
> From: Sancho Dauskardt [mailto:sancho@dauskardt.de]
> Sent: Saturday, June 15, 2002 3:50 PM
> To: Kurt Garloff; Linux kernel list; Linux SCSI list
> Cc: linux-usb-devel@lists.sourceforge.net;
> linux1394-devel@lists.sourceforge.net
> Subject: Re: /proc/scsi/map
>
>
>
> >Life would be easier if the scsi subsystem would just report
> which SCSI
> >device (uniquely identified by the
> controller,bus,target,unit tuple) belongs
> >to which high-level device. The information is available in
> the kernel.
> >
> >Attached patch does this:
> >garloff@pckurt:/raid5/Kernel/src $ cat /proc/scsi/map
> ># C,B,T,U Type onl sg_nm sg_dev nm dev(hex)
> >0,0,00,00 0x05 1 sg0 c:15:00 sr0 b:0b:00
> [...]
>
> Great, this was really missing badly.
>
> But how about adding another column: GUID.
> Most usb-storage and (all?) FireWire devices have such a
> unique identitiy.
> In contrast to native SCSI devices, these emulated SCSI devices on
> hot-plugging busses will change their LUNs/IDs. Therefor the
> GUID is really
> a must to be able to create stable names (laptop suspend, etc.).
>
> Both usb-storage and iee1394-sbp2 know the GUID. It only needs to be
> communicated..
>
> I'd guess that FibreChannel has similar problems ?
>
> - sda
>
> -
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