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Date:      Tue, 22 Aug 2000 12:50:19 -0700
From:      Mike Smith <msmith@freebsd.org>
To:        Charles Randall <crandall@matchlogic.com>
Cc:        freebsd-smp@freebsd.org
Subject:   Re: 4.0-R panic on Dell PowerEdge 2450 
Message-ID:  <200008221950.MAA21476@mass.osd.bsdi.com>
In-Reply-To: Your message of "Tue, 22 Aug 2000 13:15:42 MDT." <5FE9B713CCCDD311A03400508B8B301358781F@bdr-xcln.is.matchlogic.com> 

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> From: Mike Smith [mailto:msmith@freebsd.org]
> >> The disk controller is,
> >> 
> >> ahc0: <Adaptec aic7899 Ultra160 SCSI adapter> port 0xdc00-0xdcff mem
> >> da0: <SEAGATE ST318404LC 0005> Fixed Direct Access SCSI-3 device 
> >> da1: <SEAGATE ST318404LC 0005> Fixed Direct Access SCSI-3 device 
> >
> >Not sure if you've had this mentioned yet or not, but there are issues 
> >between this SCSI driver and these disks; you need to get a firmware 
> >update from Seagate (or disable write caching).
> 
> Can you elaborate? Is this a FreeBSD-specific problem? Does Dell know this?

It's a problem specific to interaction between this Seagate firmware and 
the FreeBSD Adaptec driver, however it is a Seagate bug.  I believe that 
Dell know about it; Seagate certainly do.

> >However, your real problem is that 4.0R does not correctly support the 
> >APIC configuration in your system, and you will need to update to 4.1.
> 
> Confirmed. 4.1-R survived a 4-day I/O thrashing.

Good to hear, thanks for the confirmation!
-- 
... every activity meets with opposition, everyone who acts has his
rivals and unfortunately opponents also.  But not because people want
to be opponents, rather because the tasks and relationships force
people to take different points of view.  [Dr. Fritz Todt]




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