From owner-freebsd-i386@FreeBSD.ORG Thu May 20 16:10:19 2004 Return-Path: Delivered-To: freebsd-i386@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8C4A016A4CE for ; Thu, 20 May 2004 16:10:19 -0700 (PDT) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6B8CD43D41 for ; Thu, 20 May 2004 16:10:19 -0700 (PDT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) i4KNAJIW063524 for ; Thu, 20 May 2004 16:10:19 -0700 (PDT) (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.12.11/8.12.11/Submit) id i4KNAJD2063523; Thu, 20 May 2004 16:10:19 -0700 (PDT) (envelope-from gnats) Resent-Date: Thu, 20 May 2004 16:10:19 -0700 (PDT) Resent-Message-Id: <200405202310.i4KNAJD2063523@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-i386@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Wim Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1142E16A4CE for ; Thu, 20 May 2004 16:02:44 -0700 (PDT) Received: from www.freebsd.org (www.freebsd.org [216.136.204.117]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0B0B543D45 for ; Thu, 20 May 2004 16:02:44 -0700 (PDT) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.12.11/8.12.11) with ESMTP id i4KN2hbA098407 for ; Thu, 20 May 2004 16:02:43 -0700 (PDT) (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.12.11/8.12.11/Submit) id i4KN2hUN098406; Thu, 20 May 2004 16:02:43 -0700 (PDT) (envelope-from nobody) Message-Id: <200405202302.i4KN2hUN098406@www.freebsd.org> Date: Thu, 20 May 2004 16:02:43 -0700 (PDT) From: Wim To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-2.3 Subject: i386/66966: MD devices trash system X-BeenThere: freebsd-i386@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: I386-specific issues for FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 May 2004 23:10:19 -0000 >Number: 66966 >Category: i386 >Synopsis: MD devices trash system >Confidential: no >Severity: critical >Priority: medium >Responsible: freebsd-i386 >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu May 20 16:10:19 PDT 2004 >Closed-Date: >Last-Modified: >Originator: Wim >Release: 5.2.1, 5.2, 5.0 >Organization: >Environment: DEFAULT kernels on 5 machines >Description: MD devices lock up when beeing used intensively, eating up all CPU time and disabeling other programs to be executed; in the end the machines just hang; rebooting is not possible unless done by physically resetting the server by turning it off and back one. Terminating the MD device or unmounting it seems to be impossible. >How-To-Repeat: Manifests on all Intel P2 Celeron, P3 and P4 I've tested, but not on AMD; simply create an MD-virtual disk and use it intensively by compiling a program on it for example or building a world to it. Tested on multiple BSD installations; though BSD 5.0 seems to have less problems with it then 5.2.1. >Fix: Unkown >Release-Note: >Audit-Trail: >Unformatted: