From owner-freebsd-stable@FreeBSD.ORG Thu Apr 24 13:24:36 2003 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 246D437B401 for ; Thu, 24 Apr 2003 13:24:36 -0700 (PDT) Received: from perrin.int.nxad.com (internal.ext.nxad.com [69.1.70.251]) by mx1.FreeBSD.org (Postfix) with ESMTP id 433AE43FDD for ; Thu, 24 Apr 2003 13:24:35 -0700 (PDT) (envelope-from sean@perrin.int.nxad.com) Received: by perrin.int.nxad.com (Postfix, from userid 1001) id D9F2C2105C; Thu, 24 Apr 2003 13:24:33 -0700 (PDT) Date: Thu, 24 Apr 2003 13:24:33 -0700 From: Sean Chittenden To: ian j hart Message-ID: <20030424202433.GB79923@perrin.int.nxad.com> References: <20030424054114.GY79923@perrin.int.nxad.com> <200304241925.31126.ianjhart@ntlworld.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200304241925.31126.ianjhart@ntlworld.com> User-Agent: Mutt/1.4i X-PGP-Key: finger seanc@FreeBSD.org X-PGP-Fingerprint: 3849 3760 1AFE 7B17 11A0 83A6 DD99 E31F BC84 B341 X-Web-Homepage: http://sean.chittenden.org/ cc: freebsd-stable@freebsd.org Subject: Re: ATA tag queuing broken... X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 24 Apr 2003 20:24:36 -0000 > > Alright, well it's apparently no surprise to folks that ATA tag > > queuing is broken at the moment. Are there any objections to me > > adding a few cautious words to ata(4) and tuning(7) that advise > > _against_ the use of ata tag queuing given that they're likely the > > fastest way to reboot a -STABLE box? > > > > Here's a PR that I tacked a tad bit of info into: > > > > http://www.FreeBSD.org/cgi/query-pr.cgi?pr=kern/42563 > > That's news to me, works just fine here (4.8-R). That's what my box is as well. See the bottom of the PR for details, but an egrep -r via NFS reboots the box consistently as well as a local CVSup + nice +20 buildworld. > What do you mean by "at the moment"? That pr is six months old. Agreed, but since there's no voting for bugs in gnats, I figured I'd "me too" the PR with an updated time/date and slightly more info. > Did you check the list first? I sent another "works for me" less > than a month ago. (Thread: Status of ATA tagging in Stable Kevin > Oberman 20030329) Yup. It "works" in the sense that under low load, the box works. As soon as I push it, however, it panics and resets. > I note that the pr originator also has the *known to be broken* DTLA > drives. Hrm, well, according to the man pages I've got the right stuff... or not, I don't remember the qualifications mentioned in tuning(7): atapci0: port 0xdc00-0xdc0f at device 17.1 on pci0 ata0: at 0x1f0 irq 14 on atapci0 ata1: at 0x170 irq 15 on atapci0 ad0: 58644MB [119150/16/63] at ata0-master tagged UDMA100 ad2: 58644MB [119150/16/63] at ata1-master tagged UDMA100 Grump, nm. I may extend the warning from tuning(7) over into ata(4) simply because tuning(7) seems to contain more info on ata(4) in this regard. -sc -- Sean Chittenden