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Date:      Mon, 19 Feb 2001 14:42:11 -0800 (PST)
From:      John Polstra <jdp@polstra.com>
To:        stable@freebsd.org
Cc:        ehoward@ameritech.net
Subject:   Re: just keep on crashing...
Message-ID:  <200102192242.f1JMgB704018@vashon.polstra.com>
In-Reply-To: <20010214143910.A3906@ameritech.net>
References:  <20010214143910.A3906@ameritech.net>

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In article <20010214143910.A3906@ameritech.net>,
Eric L. Howard <ehoward@ameritech.net> wrote:
> I'm attempting to get 4.2 up on a homebrew.
> 
> ASUS P2B-DS mobo w/ onboard aic7xxx
> 2 - Seagate ST39204LW U2 drives
> Dual PIII 700Mhz
> 
> I'm almost consistently running into problems when I go to do stuff like cvsup
> or even installing some packages.  Seems as if whenever I get into something
> pushing the drives heavy and consistently for any sustained period the machines
> crashes.
> 
> Errors include 
> SCB 69: Immediate reset
> and
> Invalid pack
[...]
> da0 at ahc0 bus 0 target 0 lun 0
> da0: <SEAGATE ST39204LW 0002> Fixed Direct Access SCSI-3 device 
> da0: 80.000MB/s transfers (40.000MHz, offset 63, 16bit), Tagged Queueing Enabled
> da0: 8750MB (17921835 512 byte sectors: 255H 63S/T 1115C)
> da1 at ahc0 bus 0 target 1 lun 0
> da1: <SEAGATE ST39204LW 0002> Fixed Direct Access SCSI-3 device 
> da1: 80.000MB/s transfers (40.000MHz, offset 63, 16bit), Tagged Queueing Enabled
> da1: 8750MB (17921835 512 byte sectors: 255H 63S/T 1115C)

I could be steering you in the wrong direction, but I believe these
are the Seagate drives that had a firmware bug which could cause the
kinds of symptoms you describe.  The work-around is to disable write
cache enable (WCE) on the drives using "camcontrol modepage -e ...".
Sorry, I don't remember the precise incantation, and you can read the
camcontrol man page as well as I can. :-)  Try turning off WCE on
these drives and see if it fixes the problem.  It can't hurt.

John
-- 
  John Polstra                                               jdp@polstra.com
  John D. Polstra & Co., Inc.                        Seattle, Washington USA
  "Disappointment is a good sign of basic intelligence."  -- Chögyam Trungpa



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