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Date:      Sat, 6 Jan 2001 22:24:22 -0700
From:      "Kenneth D. Merry" <ken@kdm.org>
To:        The Hermit Hacker <scrappy@hub.org>
Cc:        freebsd-scsi@FreeBSD.ORG
Subject:   Re: parity error detected in ...
Message-ID:  <20010106222421.A36036@panzer.kdm.org>
In-Reply-To: <Pine.BSF.4.31.0101061440150.447-100000@thelab.hub.org>; from scrappy@hub.org on Sat, Jan 06, 2001 at 02:44:54PM -0400
References:  <Pine.BSF.4.31.0101061440150.447-100000@thelab.hub.org>

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On Sat, Jan 06, 2001 at 14:44:54 -0400, The Hermit Hacker wrote:
> 
> newest 4.2-STABLE kernel, two scsi bus, 3 drives each ... and i'm getting
> the following:
> 
> Jan  6 14:27:54 poseidon /kernel: ahc0:A:0: parity error detected in Message-in phase. SEQADDR(0x121) SCSIRATE(0x0)
> Jan  6 14:27:54 poseidon /kernel: ahc0:A:0: parity error detected in Message-in phase. SEQADDR(0x121) SCSIRATE(0x0)

That looks like a cabling/connector problem of some sort.

I would suggest checking your cabling and termination.

> Jan  6 14:28:09 poseidon /kernel: (ahc0:A:0:0): refuses tagged commands.  Performing non-tagged I/O
> Jan  6 14:28:09 poseidon /kernel: (ahc0:A:0:0): refuses tagged commands.  Performing non-tagged I/O
> Jan  6 14:28:09 poseidon /kernel: ahc0:A:0: Target did not send an IDENTIFY message. LASTPHASE = 0x0, SAVED_SCSIID == 0x7
> Jan  6 14:28:09 poseidon /kernel: ahc0:A:0: Target did not send an IDENTIFY message. LASTPHASE = 0x0, SAVED_SCSIID == 0x7
> Jan  6 14:28:09 poseidon /kernel: ahc0: Issued Channel A Bus Reset. 64 SCBs aborted
> Jan  6 14:28:09 poseidon /kernel: ahc0: Issued Channel A Bus Reset. 64 SCBs aborted

From the timestamps, those may just be generic problems caused by the parity
errors.

So try looking at cabling and termination and see if that helps things.

Ken
-- 
Kenneth Merry
ken@kdm.org


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