From owner-freebsd-bugs@FreeBSD.ORG Sat Aug 12 16:10:13 2006 Return-Path: X-Original-To: freebsd-bugs@hub.freebsd.org Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id EF77216A4DE for ; Sat, 12 Aug 2006 16:10:12 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id D80D743D4C for ; Sat, 12 Aug 2006 16:10:11 +0000 (GMT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.13.4/8.13.4) with ESMTP id k7CGABrL030639 for ; Sat, 12 Aug 2006 16:10:11 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.13.4/8.13.4/Submit) id k7CGAB98030638; Sat, 12 Aug 2006 16:10:11 GMT (envelope-from gnats) Resent-Date: Sat, 12 Aug 2006 16:10:11 GMT Resent-Message-Id: <200608121610.k7CGAB98030638@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, "O. Hartmann" Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C9DD516A4DF for ; Sat, 12 Aug 2006 16:06:21 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (www.freebsd.org [216.136.204.117]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9EAFA43D45 for ; Sat, 12 Aug 2006 16:06:21 +0000 (GMT) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.13.1/8.13.1) with ESMTP id k7CG6LRC061614 for ; Sat, 12 Aug 2006 16:06:21 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.13.1/8.13.1/Submit) id k7CG6LSU061613; Sat, 12 Aug 2006 16:06:21 GMT (envelope-from nobody) Message-Id: <200608121606.k7CG6LSU061613@www.freebsd.org> Date: Sat, 12 Aug 2006 16:06:21 GMT From: "O. Hartmann" To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-2.3 Cc: Subject: kern/101926: FBSD 6.1-STABLE crashes under heavy disk (ar0) I/O and acces to USB device X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Aug 2006 16:10:13 -0000 >Number: 101926 >Category: kern >Synopsis: FBSD 6.1-STABLE crashes under heavy disk (ar0) I/O and acces to USB device >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Aug 12 16:10:11 GMT 2006 >Closed-Date: >Last-Modified: >Originator: O. Hartmann >Release: FreeBSD 6.1-STABLE/AMD64 >Organization: >Environment: FreeBSD XXX.XXX.XXX.org 6.1-STABLE FreeBSD 6.1-STABLE #27: Sat Aug 12 14:03:42 UTC 2006 root@XXX.XXX.XXX.org:/usr/obj/usr/src/sys/THOR amd64 >Description: FreeBSD 6.1-STABLE/AMD64 crashes sporadically under heavy disk I/O when accessing USB device (simply mounting is enough to crash the box). This behaviour has now been watched in several situations on an AMD64 based box, when doing a lot of disk I/O due to torrent sharing or just doing a filesystem check after a crash: box crashes without message when just mounting an USB backup harddrive or after mounting this USB HD and doing then a lot of disk I/O both on the USB device and the main RAID 0 (ar0) of the box. It is also very suspicious that doing a lot of disk I/O slows the box down just to be unusuable, reacting very, very slow. This occured after swapping the 'old' SATA disks to new Hitachi T7K250 SATA II HDs. >How-To-Repeat: Do a lot of disk I/O and then just try to mount an USB HD and do disk I/O to this USB HD while box is still under heavy load. It may lead you into a crash. >Fix: >Release-Note: >Audit-Trail: >Unformatted: