[4876] in linux-scsi channel archive
Re: dual-attached disk
daemon@ATHENA.MIT.EDU (George E. Lass)
Tue Oct 13 18:53:00 1998
Date: Tue, 13 Oct 1998 14:13:54 -0500
From: "George E. Lass" <George.Lass@osc.com>
To: thoth@purplefrog.com
CC: linux-scsi@vger.rutgers.edu
thoth@purplefrog.com wrote:
>
> 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?
>
> --
> Bob Forsman thoth@gainesville.fl.us
> http://www.gainesville.fl.us/~thoth/
>
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> To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
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I've tried this with the 2.0.30 kernel (RedHat 4.2) and the AHA-2940U
host
adapters and it doesn't work very well.
It seems like if the system that does *not* have the drive mounted is
reset, it will get into some sort of "reset war" on the SCSI bus with
the other system. This happend before control is ever passed to the
boot loader. (must be something in the AHA-2940 BIOS).
But don't let that stop you! If you do manage to get it to work please
let me know your configuration.
George Lass
george.lass@osc.com
P.S. For now I'm doing dual writes from my applications to my backup
server via NFS over a dedicated 100mb ethernet link
G
--
... Unix IS a user friendly O/S ...
(It's just picky about its friends)
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