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Re: Scsi card detection order in 2.2.x

daemon@ATHENA.MIT.EDU (Riley Williams)
Fri Sep 3 07:18:27 1999

Date:   Fri, 3 Sep 1999 12:17:19 +0100 (GMT)
From:   Riley Williams <rhw@MemAlpha.CX>
To:     David Livingstone <davidl@cn.ca>
cc:     linux-scsi@vger.rutgers.edu, linux-kernel@vger.rutgers.edu
In-Reply-To: <37CE80D8.8E01591C@cn.ca>

Hi David.

On Thu, 2 Sep 1999, David Livingstone wrote:

 > 
 > I have multiple scsi cards in the same machine(ie ICP/NCR) and I
 > need the scsi disks detected in the same order every time. In
 > 2.2.x is the only way to do this by my modifying the order in
 > hosts.c ? I could use a combination of kernel/module loads but I
 > would prefer to have both drivers in the kernel.

 > The specific problem I'm running into is when a temporary
 > external jaz is connected to the ncr scsi. Because the ncr is
 > detected before the ICP the root disk now ends up as sdb instead
 > of sda.

Isn't there something similar to the multi-ethernet thingie to deal
with this? I haven't used SCSI myself, but I have configured several
machines with multiple different ethernet cards (typically NE2k and
Tulip, but there have been other combinations) where I have needed to
guarantee the order they are detected.

The fix in that case was to use lilo's "append=" facility to specify
which driver should grab which card, and if it doesn't already exist,
a similar facility is probably a good idea for SCSI...

Best wishes from Riley.

+----------------------------------------------------------------------+
| There is something frustrating about the quality and speed of Linux  |
| development, ie., the quality is too high and the speed is too high, |
| in other words, I can implement this XXXX feature, but I bet someone |
| else has already done so and is just about to release their patch.   |
+----------------------------------------------------------------------+
 * ftp://ftp.MemAlpha.cx/pub/rhw/Linux
 * http://www.MemAlpha.cx/Linux/


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