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Date:      Fri, 15 Mar 2002 14:03:48 -0600
From:      Matthew Reimer <mreimer@vpop.net>
To:        "Justin T. Gibbs" <gibbs@scsiguy.com>
Cc:        scsi@FreeBSD.ORG
Subject:   Re: no active SCB for reconnecting target
Message-ID:  <3C9253A4.1060302@vpop.net>
References:  <200203151953.g2FJrKI80174@aslan.scsiguy.com>

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Justin T. Gibbs wrote:
>>We are getting errors like the following a dozen or so times per day, 
>>for several months now (maybe even a year):
>>
>>ahc0:A:13: no active SCB for reconnecting target - issuing BUS DEVICE RESET
>>Mar 15 00:49:26 ring /kernel: SAVED_SCSIID == 0xd7, SAVED_LUN == 0x0, 
>>ARG_1 == 0x2a ACCUM = 0x17
>>...
> 
> 
> I'm looking into any chip errata that might cause this, but the best
> bet is a bogus cable or terminator.  According to your dmesg output,
> there is no ID 13 on the bus.  Nonetheless, occassionally during a
> selection the aic7896 believes that bit 13 is set on the bus.  Very
> wierd.

The cable the disks are on is a preterminated LVD from Adaptec. We 
replaced it at least once (possibly twice; I can't remember) with 
another preterminated Adaptec LVD cable trying to cure this problem, but 
to no avail.

Forgot to mention that we see this error a dozen or so times per day. 
FWIW, on another machine we occasionally see the same problem on another 
machine with the same motherboard, but not in the last week (don't have 
logs further back than a week).

Thanks for your help Justin.

Matt


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