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List:       taroon-list
Subject:    RE: How LINUX assign SAN driver number?
From:       Rafael Ferreira <rafael.ferreira () apollogrp ! edu>
Date:       2005-03-31 20:45:07
Message-ID: 1ECBA6B893F0D34B8AEB1E916007E446315AD4 () AMSGEV01 ! apollogrp ! edu
[Download RAW message or body]

The qlogic driver will persistently bind to a target. Not persistently bind
to the SCSI device (as far as I know), so if a lun gets added or removed
them things will change. 

- raf

-----Original Message-----
From: taroon-list-bounces@redhat.com [mailto:taroon-list-bounces@redhat.com]
On Behalf Of Jerry Uanino
Sent: Tuesday, March 29, 2005 7:19 AM
To: Discussion of Red Hat Enterprise Linux 3 (Taroon)
Cc: as
Subject: Re: How LINUX assign SAN driver number?

I'm not sure if linux has it, but generally speaking the qlogic and
most SAN drivers usually have a way to "persistently bind".  If you
google persistent binding and linux and qla2300 you might find
examples.


On Mon, 28 Mar 2005 12:52:52 -0700, Rafael Ferreira
<rafael.ferreira@apollogrp.edu> wrote:
> I believe you're talking about the SCSI ID, for instance, sda, sdb. SCSI
> devices are dynamically assigned, you need to look into devlabels as a way
> to "persist" that SAN storage - If I fully understood your questions,
which
> I'm not sure I did.
> 
> -raf
> 
> -----Original Message-----
> From: taroon-list-bounces@redhat.com
[mailto:taroon-list-bounces@redhat.com]
> On Behalf Of mcclnx mcc
> Sent: Monday, March 28, 2005 6:40 AM
> To: as; as3
> Subject: How LINUX assign SAN driver number?
> 
> I have several DELL server with Qlogic HBA cards  on
> it.  Every server since have different  SAN driver
> number.  For example some server SAN drive start on
> /dev/sdd and some server start on /dev/sde.  The local
> disks on DELL server are the same why SAN drive
> numbert different?
> 
> The O.S. we have are AS 3.0 and 2.1.
> 
> Thanks.
> 
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