Date: Tue, 4 Dec 2001 21:40:06 +0100 From: "Steve O'Hara-Smith" <steve@sohara.org> To: "Daniel O'Connor" <doconnor@gsoft.com.au> Cc: Cy.Schubert@uumail.gov.bc.ca, freebsd-stable@FreeBSD.ORG, sos@freebsd.dk Subject: Re: mmap busted in 4.3? Message-ID: <20011204214006.23420a3c.steve@sohara.org> In-Reply-To: <XFMail.20011119000054.doconnor@gsoft.com.au> References: <200111181534.fAIFY5E02204@cwsys.cwsent.com> <XFMail.20011119000054.doconnor@gsoft.com.au>
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On Mon, 19 Nov 2001 00:00:54 +0800 (WST)
"Daniel O'Connor" <doconnor@gsoft.com.au> wrote:
DO>
DO> On 18-Nov-2001 Cy Schubert - ITSD Open Systems Group wrote:
DO> > I think that there's a greater possibility of a hardware problem. I
DO> > bet it's memory. Also, there are some reported problems with data
DO> > corruption using the VIA KT133A chipset. The problem appears to be
DO> > with the 686B Southbridge chip.
DO>
DO> X-(
DO>
DO> Guess what chipset it's on?
DO> The dd copies have had 1 error so far..
I have applied Søren Schmidts fix(1) for this to my -stable system with
a VIA KT133A/686B (Jetway 663AS MB) and it has fixed my sure fire test case
(dd if=/dev/ad0 of=/dev/null bs=1024k - would crash after about 20Gb and make
funny noises rather earlier - now runs smoothly to the end of the 30Gb drive).
Question for Søren, I know of (via USENET) some people who seem to
be much more severely afflicted, is there any good reason why I shouldn't
offer them this as a patch ?
On a related note, the interface speed for this box seems to be around
47Mb/sec (using the 5 runs of dd the first half megabyte test), the drive is
an IBM DTLA 307030.
(1) OK workaround - it's the same code (via686b routine and conditional call)
as -current but in ata-all.c instead of ata-pci.c.
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