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Message-ID: <19980222095626.41924@mi.uni-koeln.de>
Date: Sun, 22 Feb 1998 09:56:26 +0100
From: Stefan Esser <se@FreeBSD.ORG>
To: Castor Fu <castor@geocast.net>, freebsd-stable@FreeBSD.ORG
Cc: Stefan Esser <se@FreeBSD.ORG>
Subject: Re: ncr0 hangs with freebsd-stable
References: <199802220322.TAA09638@geo.geocast.net>
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In-Reply-To: <199802220322.TAA09638@geo.geocast.net>; from Castor Fu on Sat, Feb 21, 1998 at 07:22:26PM -0800
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On 1998-02-21 19:22 -0800, Castor Fu <castor@geocast.net> wrote:
> After cvsup'ing to the latest version of FreebSD-2.2.5-STABLE today,
> when booting the generic kernel I cannot mount the hard disk attached
> to my ASUS SC-200 SCSI controller.  The process executing the mount appears
> to simply hang.
> 
> Here's what dmesg says about the scsi controller on the working kernel.
> 
> 	ncr0 <ncr 53c810 fast10 scsi> rev 2 int a irq 9 on pci0:13
> 	ncr0 waiting for scsi devices to settle
> 	(ncr0:0:0): "CONNER CFP2107E  2.14GB 1524" type 0 fixed SCSI 2
> 	sd0(ncr0:0:0): Direct-Access 
> 	sd0(ncr0:0:0): 10.0 MB/s (100 ns, offset 8)
> 	2048MB (4194304 512 byte sectors)
> 
> 
> I suppose it's possible that it's a cabling problem, but I can switch
> between the 2.2.5-stable (from about Jan 1 1998) and today's
> version and reliably reproduce the hang.
> 
> Today (Feb 21) I cvsup'd the latest version of FreeBSD-2.2.5-STABLE and
> did "make buildworld" and "make installworld".
> 
> Any clues about what might be wrong?

Sorry, none from my side. The last commit to the NCR driver
in stable has been on December, 12, 1998, and it just made
MAX_START (the number of commands active at a time for this
controller) to a constant 32. Even with 7 drives and 4 tags
each you are not going to hit that limit, and of course not
from within the mount when going multi-user ...

There have been a few changes in FreeBSD recently, and one
of them may hurt you. Perhaps you've got LKMs that are no
longer compatible with a recent kernel ?

Regards, STefan

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