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Date: Tue, 10 Sep 1996 20:27:19 -0700 (PDT)
From: Doug White <dwhite@gdi.uoregon.edu>
Reply-To: dwhite@resnet.uoregon.edu
To: Hoss Firooznia <hfir@math.rochester.edu>
cc: questions@freebsd.org
Subject: Re: Weird kernel messages
In-Reply-To: <199609102356.TAA17135@poincare.math.rochester.edu>
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On Tue, 10 Sep 1996, Hoss Firooznia wrote:

> I was wondering if anyone could explain some odd kernel messages that have
> been popping up in the syslog on a new machine running 2.1.5-RELEASE.
> 
> First, however, the relevant info (I hope) on the SCSI controller and disk:
> 
>  ahc0 <Adaptec 2940 Ultra SCSI host adapter> rev 0 int a irq 9 on pci0:15
>  ahc0: aic7880 Single Channel, SCSI Id=7, 16 SCBs
>  (ahc0:0:0): "CONNER CFP4207S  4.28GB 5767" type 0 fixed SCSI 2
>  sd0(ahc0:0:0): Direct-Access 4096MB (8388608 512 byte sectors)  
> 
> Okay, now the problem.  The system boots and seems to function just fine,
> but every once in a while the kernel makes disturbing complaints like the
> following:
> 
>  Sep 10 03:16:49 hecke /kernel: sd0(ahc0:0:0): ABORTED COMMAND
> info:7f877f csi:f,90,0,27 asc:9,0 Track following error field
> replaceable unit: 15
>  Sep 10 03:16:49 hecke /kernel: sd0(ahc0:0:0): ABORTED COMMAND
> info:7f877f csi:f,90,0,27 asc:9,0 Track following error field
> replaceable unit: 15
>  Sep 10 03:16:49 hecke /kernel: , retries:4
>  Sep 10 03:16:49 hecke /kernel: , retries:4
> 
> Is this an indication of a hardware problem with the SCSI disk?  Should I be
> worried?

My personal guess would be yes, your disk is going down.  Before giving
up, though, check, double check and triple check your cabling and
termination.  

Doug White                              | University of Oregon  
Internet:  dwhite@resnet.uoregon.edu    | Residence Networking Assistant
http://gladstone.uoregon.edu/~dwhite    | Computer Science Major