From owner-freebsd-stable Tue Feb 2 23:26:22 1999 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id XAA15005 for freebsd-stable-outgoing; Tue, 2 Feb 1999 23:26:22 -0800 (PST) (envelope-from owner-freebsd-stable@FreeBSD.ORG) Received: from nhj.nlc.net.au (nhj.nlc.net.au [203.24.133.1]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id XAA14998 for ; Tue, 2 Feb 1999 23:26:19 -0800 (PST) (envelope-from john.saunders@nlc.net.au) Received: (qmail 25432 invoked by uid 1000); 3 Feb 1999 18:26:13 +1100 From: "John Saunders" Date: Wed, 3 Feb 1999 18:26:13 +1100 (EST) To: Gregory Bond cc: freebsd-stable@FreeBSD.ORG Subject: Re: Kernel panic with recent RELENG_3 In-Reply-To: <199902030603.RAA20524@lightning.itga.com.au> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Wed, 3 Feb 1999, Gregory Bond wrote: > > Has anybody else noticed the IDE disk flackyness lately? One one machine > > I have a ccd mirror, and on another machine a vinum mirror. If I hit > > these filesystems heavily it's a garantee to lock, no panic, virtual > > console switching works, ping works, but everything stops. > > I discovered what sounds very similar which bit me only when softupdates were > enabled. I also discovered that if I put the 0xa0ff flags on the drive spec in > the kernel config (to enable DMA/32 bit/ multi-sector transfers), it works > fine. My conclusion was some bug in the old-fashioned bit of the IDE driver, > but no-one accepted my offers of a guaranteed hang to help debug the problem :< Hmm, very interesting. Since the recent commit to wd.c that is causing the DMA error 0 messages, I have been disabling DMA mode in my kernels until it gets sorted out. I might try with DMA enabled and see what happens. Cheers. -- +------------------------------------------------------------+ . | John Saunders - mailto:john@nlc.net.au (EMail) | ,--_|\ | - http://www.nlc.net.au/ (WWW) | / Oz \ | - 02-9489-4932 or 041-822-3814 (Phone) | \_,--\_/ | NHJ NORTHLINK COMMUNICATIONS - Supplying a professional, | v | and above all friendly, internet connection service. | +------------------------------------------------------------+ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message