From: Stefan Richter <stefanr@s5r6.in-berlin.de>
To: "" <jamagallon@ono.com>
Cc: Linux-Kernel <linux-kernel@vger.kernel.org>
Subject: Re: Out of order kernel messages in sd detection
Date: Tue, 17 Nov 2009 17:49:20 +0100 [thread overview]
Message-ID: <4B02D410.4070004@s5r6.in-berlin.de> (raw)
In-Reply-To: <C991F902-ED0F-44B5-8326-DB51C2E0C899@ono.com>
J.A. Magallón wrote:
> And, BTW, would sometime the numbering in ataX be made consistent with
> SCSI ( ie, ata1 is scsi0....).
No. There are several other transports which can register SCSI
initiator instances at any time. SAS, USB, 1394, FC, ...
Remember: These object numbers don't have any deeper meaning. There is
nothing more to them than (a) that they are systemwide unique and (b)
persist (only) for the duration of the object's lifetime.
Look for persistent and possibly globally unique identifiers (serial
numbers) of the actual hardware instead. Udev for example uses them to
create useful symlinks to device files.
--
Stefan Richter
-=====-==--= =-== =---=
http://arcgraph.de/sr/
prev parent reply other threads:[~2009-11-17 16:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-17 13:21 "J.A. Magallón"
2009-11-17 16:49 ` Stefan Richter [this message]
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