[4923] in linux-scsi channel archive
Re: dual-attached disk
daemon@ATHENA.MIT.EDU (Stephen C. Tweedie)
Fri Oct 16 17:23:59 1998
Date: Fri, 16 Oct 1998 12:12:36 +0100
From: "Stephen C. Tweedie" <sct@redhat.com>
To: thoth@purplefrog.com
Cc: linux-scsi@vger.rutgers.edu
In-Reply-To: <199810131355.JAA22436@cairo.purplefrog.com>
Hi,
On Tue, 13 Oct 1998 09:55:26 -0400, thoth@purplefrog.com said:
> Does Linux support dual-attached SCSI drives? We have an
> application where we'd like to take some disk and use it from one
> machine, and if that machine fails, mount the disks on the other,
> and resume serving data. In the Sun world, you just run a SCSI
> chain out of one machine and into another. Can Linux do this?
It's more of a driver issue. I have heard of people doing exactly
this on Linux with certain SCSI drivers, and other people getting
nowhere with a different driver. Common problems are things like bus
resets: if a driver doesn't like an unexpected bus reset and responds
by resetting the bus itself, you get an endless ping-pong of bus
resets between the two controllers which kills the bus dead.
--Stephen
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