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Date:      Mon, 16 Jul 2001 09:29:09 -0700 (PDT)
From:      Matthew Jacob <mjacob@feral.com>
To:        Mike Tancsa <mike@sentex.net>
Cc:        <scsi@freebsd.org>
Subject:   Re: SCSI timeout problems going from May23 to July13 kernel 
Message-ID:  <20010716092359.F96667-100000@wonky.feral.com>
In-Reply-To: <200107161609.f6GG95U69942@aslan.scsiguy.com>

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Timeouts were lengthened, not shortened recently. This looks like it timed out
on the test read in samount...... that's a four (4) minute timeout.

The tape driver is very broken in a lot of ways.

Use the scsi_sa.c that's on my web page on freebsd.org

	(http://people.freebsd.org/~mjacob/scsi_sa.c)

with a CAMDEBUG kernel that has camcontrol -Ic N:0:0 (you'll have to supply
the N for the ordinal bus number the tape is on) and ship me the output.

-matt


On Mon, 16 Jul 2001, Justin T. Gibbs wrote:

> >Jul 16 09:31:20 backup2 /kernel: (sa0:ahc0:0:0:0): SCB 0x9 - timed out
> >while idle, SEQADDR == 0x8
>
> ...
>
> >Jul 16 09:31:20 backup2 /kernel: (sa0:ahc0:0:0:0): Queuing a BDR SCB
> >Jul 16 09:31:20 backup2 /kernel: (sa0:ahc0:0:0:0): Bus Device Reset Message
> >Sent
> >Jul 16 09:31:20 backup2 /kernel: (sa0:ahc0:0:0:0): no longer in timeout,
> >status = 34b
> >Jul 16 09:31:20 backup2 /kernel: ahc0: Bus Device Reset on A:0. 1 SCBs aborted
> >Jul 16 09:31:21 backup2 /kernel: (sa0:ahc0:0:0:0): unable to rewind after
> >test read
>
> I wonder if the timeouts are now too short for your tape drive?  Matt
> may have more ideas.
>
> --
> Justin
>
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