Date: Fri, 8 Nov 1996 23:23:27 +0100 From: se@zpr.uni-koeln.de (Stefan Esser) To: jacs@gnome.co.uk (Chris Stenton) Cc: hardware@freebsd.org Subject: Re: ncro 810 oops error Message-ID: <199611082223.XAA04916@x14.mi.uni-koeln.de> In-Reply-To: <jacs-9610051203.AA0001567@hawk.gnome.co.uk>; from Chris Stenton on Nov 5, 1996 12:03:55 %2B0000 References: <jacs-9610051203.AA0001567@hawk.gnome.co.uk>
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Chris Stenton writes: > > > I have recently upgraded to a Asus Pentium PRO Motherboard with their > NCR810 SCSI controller. While using the Amanda backup programme I am > getting a large number of errors from the controller. > > They are of the form. > > Nov 5 11:51:35 hawk /kernel: ncr?: scatter/gather failed (residue=493925376). A request to transfer some 500MB of data was issued to the driver. The scatter/gather table covers only 64KB, your memory perhaps 32MB or 64MB, so the call can't be satisfied :) The driver can't do anything about this, the parameters it receives are invalid. > They only seem to happen when it is backing up partitions other than > the root partition. > I have tried putting the Tape drive on a second controller but it made > no difference. I did not have this problem with my GigaByte Neptune > board using their NCR810 controller. This is not a hardware or controller specific problem (IMHO). You could have some file system corruption, that leads to this problem, or there could be a kernel problem (eg. missing lock). Please try a FSCK on your partitions first, and if you don't find anything, then build a kernel with a current version of /sys/pci/ncr.c. It contains some diagnostic code, which I thought might help find the cause of the out-of-bound parameter being passed ... Regards, STefan
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