From owner-freebsd-scsi Wed Jul 17 6:40: 2 2002 Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 40CF337B400 for ; Wed, 17 Jul 2002 06:39:58 -0700 (PDT) Received: from arjun.niksun.com (gwnew.niksun.com [63.148.27.34]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5DD4D43E42 for ; Wed, 17 Jul 2002 06:39:53 -0700 (PDT) (envelope-from ath@niksun.com) Received: from stiegl.mj.niksun.com (stiegl.mj.niksun.com [10.70.0.231]) by arjun.niksun.com (8.9.3/8.9.3) with ESMTP id JAA77638; Wed, 17 Jul 2002 09:39:52 -0400 (EDT) (envelope-from ath@stiegl.mj.niksun.com) Received: (from ath@localhost) by stiegl.mj.niksun.com (8.11.6/8.11.6) id g6HDdqv51648; Wed, 17 Jul 2002 09:39:52 -0400 (EDT) (envelope-from ath@stiegl.mj.niksun.com) From: Andrew Heybey To: Dave Hayes Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: Random hangs on (at least) SCSI reads References: <200207081851.g68Ipc069208@hokkshideh2.jetcafe.org> Date: 17 Jul 2002 09:39:51 -0400 In-Reply-To: <200207081851.g68Ipc069208@hokkshideh2.jetcafe.org> Message-ID: <858z4ajwwo.fsf@stiegl.mj.niksun.com> Lines: 39 User-Agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.1 (Cuyahoga Valley) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org > Note the following machine: > FreeBSD dns.apolloi.com 4.5-RELEASE-p4 > ... > ahc0: port 0xd800-0xd8ff mem > 0xff8ff000-0xff8fffff irq 10 at device 1.0 on pci1 > aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/255 SCBs > ... > ahc1: port 0xd400-0xd4ff mem > 0xff8fd000-0xff8fdfff irq 11 at device 3.0 on pci1 > aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/255 SCBs > ... > da0 at ahc0 bus 0 target 0 lun 0 > da0: Fixed Direct Access SCSI-3 device > da0: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged Queueing > Enabled > da0: 35003MB (71687340 512 byte sectors: 64H 32S/T 35003C) > da1 at ahc1 bus 0 target 0 lun 0 > da1: Fixed Direct Access SCSI-3 device > da1: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged Queueing > Enabled > da1: 35003MB (71687340 512 byte sectors: 64H 32S/T 35003C) > > I can consistently get this to hang (machine locks up, no panic or > anything to console) on multiple machines with the exact same > configuration by reading from the disk at high rates of speed > (e.g. while (1) { find / -exec cat {} \; >/dev/null }). > > Anyone have any experience with this problem? Yes, I am working on > upgrading it to 4.6-p1. What motherboard? Exactly how does it lock up? Is there anything else going on on the machine at the time? I ask because we have seen hard lockups on an Intel STL2 motherboard. A PCI bus analyzer on the bus sees the disk controller vainly trying to do a memory read or write and being told to retry by the chipset. We have seen these with 4.2 and with 4.5. andrew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message