>Number:         13530
>Category:       kern
>Synopsis:       IDE on KT133A with heavy loads has massive FS corruption
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jul 21 18:39:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Tom Spindler
>Release:        NetBSD 1.5.1
>Organization:
	
>Environment:
	
System: NetBSD beefcake.biff.net 1.5.1 NetBSD 1.5.1 (DOGCOWDIAG) #0: Sat Jul 21 15:46:04 PDT 2001 notroot@veal.babymeat.com:/raid/src/sys/arch/i386/compile/DOGCOWDIAG i386

Asus A7V133 (KT133A) motherboard, BIOS 1005A.
wd0 and wd1 are both on the internal ATA/100 chains.

>Description:
Under heavy disk or I/O loads, filesystems on local IDE disks can get
massively corrupted on KT133A motherboards. This is probably related
to the older problem on the kt133 (e.g. A7V) mobos (fixed later by a
BIOS update.)

http://home.tiscalinet.de/au-ja/review-kt133a-1-en.html is the most
convenient description of the problem that I've found. The linux
folks have done a lot of futzing as of late to try and ameliorate the
problems.
	
>How-To-Repeat:
On a KT133A mobo with a non-onboard sound card, either playing mp3s
and attempting to compile a kernel, or 'make -j3'ing a kernel
are the two consistent ways I've found to get this to happen.
	
>Fix:
	
>Release-Note:
>Audit-Trail:
>Unformatted: