From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Ionut Nistor" <ionut@modulo.ro>
Subject: Re: Multipath problem in a SAN enviromnent
Date: Thu, 12 Jun 2003 09:35:32 +0300
Sender: linux-raid-owner@vger.kernel.org
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To: Luca Berra <bluca@comedia.it>
Cc: linux-raid@vger.kernel.org
List-Id: linux-raid.ids

Hi,

What do you mean by autodetection?

Ionut
----- Original Message ----- 
From: "Luca Berra" <bluca@comedia.it>
To: "Ionut Nistor" <ionut@modulo.ro>
Cc: <linux-raid@vger.kernel.org>
Sent: Wednesday, June 11, 2003 10:24 PM
Subject: Re: Multipath problem in a SAN enviromnent


> Ionut Nistor wrote:
> > Hello,
> >
> > I'm using a 2.4.18-ac3 kernel and the multipath module in order to
ensure
> > automatic IO path failover. The systems connect to a FC SAN environment.
> > New logical disks are added/removed from the SAN periodically.
> >
> > Unfortunatelly, linux's raid subsystem uses major and minor numbers in
the
> > superblock in order to identify members for all raid types - including
> > multipath. This causes the multipath module to fail when attempting to
> > identify the members. When the scsi driver is loaded, the bus is scanned
and
> > all the available devices/targets/luns are added to the scsi subsystem
and
> > are allocated a major and minor number.
> >
> you mean autodetection fails? don't use autodetection.
>
> regards,
> Luca.
>
>