Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 24 Jan 2003 02:41:03 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 24 Jan 2003 02:41:03 -0500 Received: from ns.virtualhost.dk ([195.184.98.160]:30346 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id ; Fri, 24 Jan 2003 02:41:02 -0500 Date: Fri, 24 Jan 2003 08:50:01 +0100 From: Jens Axboe To: Dave Olien , akpm@digeo.com Cc: linux-kernel@vger.kernel.org, markw@osdl.org, cliffw@osdl.org, maryedie@osdl.org, jenny@osdl.org Subject: Re: [BUG] BUG_ON in I/O scheduler, bugme # 288 Message-ID: <20030124075001.GE910@suse.de> References: <20030123135448.A8801@acpi.pdx.osdl.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030123135448.A8801@acpi.pdx.osdl.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jan 23 2003, Dave Olien wrote: > > Jens, Andrew > > The group here doing dbt2 workload measurements have hit a couple of > problems APPARENTLY in the block I/O scheduler when doing write-intensive > raw disk I/O through a DAC960 extremeraid 2000 controller. > This wasn't a problem in 2.5.49. It has appeared since then. > > I've filed a bug on the OSDL bugme database. You can read it at: > > http://bugme.osdl.org/show_bug.cgi?id=288 > > I've also put a more complete report in my web site: > > http://www.osdl.org/archive/dmo/deadline_bugon. A request got on the fifo, but not in the sort tree. This is most likely an alias. Ah yes I see it, it can happen when two requests are merged. I'll be back with a fix for this soon. -- Jens Axboe - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/