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Date:      Tue, 2 Oct 2001 12:01:04 -0400
From:      Bill Vermillion <bill@wjv.com>
To:        freebsd-stable@freebsd.org
Subject:   Re: Problems with BusLogic (aka Mylex) BT-948 controller
Message-ID:  <20011002120104.A6687@wjv.com>
In-Reply-To: <bulk.51027.20011002083354@hub.freebsd.org>; from owner-freebsd-stable-digest@FreeBSD.ORG on Tue, Oct 02, 2001 at 08:33:54AM -0700
References:  <bulk.51027.20011002083354@hub.freebsd.org>

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> ------------------------------
> 
> Date: Mon, 1 Oct 2001 12:48:52 -0400
> From: Vivek Khera <khera@kcilink.com>
> Subject: problems with BusLogic (aka Mylex) BT-948 controller

> A while back, I had written about repeated kernel warnings of CCB
> timeouts on one of my machines.  The messages are like these, with
> varying hex values:

> Sep 30 03:07:18 lorax /kernel: (da0:bt0:0:0:0): CCB 0xc7830040 - timed out
> Sep 30 03:07:26 lorax /kernel: (da0:bt0:0:0:0): CCB 0xc7830040 - timed out
> Sep 30 03:07:26 lorax /kernel: bt0: No longer in timeout

I've seen the same messages.

> This card worked flawlessly under BSD/OS, where Buslogic controllers
> were the preferred devices.  The driver under BSD/OS was extremely
> well done.  Simply installing FreeBSD on this box resulted in these
> errors.

> The above errors are repored under a recent kernel/world.
> FreeBSD lorax.kciLink.com 4.4-STABLE FreeBSD 4.4-STABLE #0: Wed Sep 26 10:06:43 EDT 2001     vivek@lorax.kciLink.com:/usr/obj/u/lorax1/usr/src/sys/LORAX  i386
> The dmesg output is below.

I've gotten them as far back as 2.x on one machine.

> bt0: BT-948 FW Rev. 5.05R Ultra Narrow SCSI Host Adapter, SCSI ID 7, 192 CCBs
Run the exact same firmware rev too.  I see this on a machine
running 3.4-RELEASE and previously - before the move to the current
location - this machine was also running on the 2.x.

The other machine with the exact same controller, same motherboard,
both Pentium era machines, has never had a problem - except that
I'm getting some re-allocation errors on the HD - that system is
being replaced this week.

The difference is the one with the time-outs is running an older
IBM XPW series drive, while the one that never fails is running
an even old Seagate Barracuda - one of the original 1/2 height
[before they went to 1"] drives] and therefore is about 6 years
old.

I had to reboot the one with the time-outs because of a user
screwup >ME< so it's only been up for 243 days.  It's running 
fairly light duty as a mail server with probably 10-15K messages
per day.

I've always assumed it was related to the controller/drive
interaction as the machines are identical down to the motherboard
firmware level, except for the HDs.

Bill

-- 
Bill Vermillion -   bv @ wjv . com

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