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Date:      Sun, 2 Jun 2002 09:58:45 +0200
From:      Bernd Walter <ticso@cicely5.cicely.de>
To:        David Powers <david@grayskies.net>
Cc:        freebsd-scsi@FreeBSD.ORG
Subject:   Re: scsi aic7899 weirdness
Message-ID:  <20020602075844.GH16695@cicely5.cicely.de>
In-Reply-To: <001e01c207fb$f865ebd0$0b00000a@david>
References:  <001e01c207fb$f865ebd0$0b00000a@david>

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On Thu, May 30, 2002 at 01:03:50PM -0400, David Powers wrote:
> I have a new disk server with a SuperMicro P4SBR motherboard with an
> on-board aic7899 controller.  When I boot the machine with either
> 4.5-RELEASE or 4-STABLE I get the attached set of lengthy messages.  The DLT
> drive attached to the controller detects, but any attempt to access it with
> mt fails with "mt: /dev/sa0: Input/output error".  Any help on figuring out
> what is going on would be greatly appreciated.
> 
> -David Powers
> 
> Copyright (c) 1992-2002 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
>  The Regents of the University of California. All rights reserved.
> FreeBSD 4.6-RC #1: Tue May 28 21:23:01 EDT 2002
>     dpowers@disk2.cornerstonecapitalpartners.com:/usr/obj/usr/src/sys/DISK
> Timecounter "i8254"  frequency 1193182 Hz
> CPU: Pentium 4 (1799.81-MHz 686-class CPU)
>   Origin = "GenuineIntel"  Id = 0xf24  Stepping = 4
[...]
> ahc0: <Adaptec aic7899 Ultra160 SCSI adapter> port 0x9000-0x90ff mem
> 0xe8200000-0xe8200fff irq 10 at device 5.0 on pci2
> aic7899: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
> ahc1: <Adaptec aic7899 Ultra160 SCSI adapter> port 0x9400-0x94ff mem
> 0xe8202000-0xe8202fff irq 11 at device 5.1 on pci2
> aic7899: Ultra160 Wide Channel B, SCSI Id=7, 32/253 SCBs
[...]
> Waiting 15 seconds for SCSI devices to settle
> ahc0:A:5: Missed busfree. Lastphase = 0xe0, Curphase = 0x0
> ahc0: Missing case in ahc_handle_scsiint. status = 8
> (probe34:ahc0:0:6:0): SCB 0x3 - timed out

Your device at ID 6 timed out before that you missed a busfree.
Most likely a cabeling or termination error.
Later on there are timeouts on other devices too.

-- 
B.Walter              COSMO-Project         http://www.cosmo-project.de
ticso@cicely.de         Usergroup           info@cosmo-project.de


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