From owner-freebsd-questions@FreeBSD.ORG Thu Feb 16 20:11:31 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D5E2816A420 for ; Thu, 16 Feb 2006 20:11:31 +0000 (GMT) (envelope-from idmc_vivr@intgdev.com) Received: from mail.networksolutionsemail.com (omr4.networksolutionsemail.com [205.178.146.54]) by mx1.FreeBSD.org (Postfix) with SMTP id 8677743D5C for ; Thu, 16 Feb 2006 20:11:30 +0000 (GMT) (envelope-from idmc_vivr@intgdev.com) Received: (qmail 3918 invoked from network); 16 Feb 2006 20:10:30 -0000 Received: from unknown (HELO webmail15) (205.178.146.50) by omr4.mgt.bos.netsol.com with SMTP; 16 Feb 2006 20:10:30 -0000 Received: from 208.40.29.234 (unverified [208.40.29.234]) by webmail15 (VisualOffice 4.01) with WEBMAIL id 19226; Thu, 16 Feb 2006 20:10:31 +0000 From: "V.I.Victor" To: freebsd-questions@freebsd.org Importance: Normal Sensitivity: Normal Message-ID: X-Mailer: Mintersoft VisualOffice, Build 4.01.1003 X-Originating-IP: [208.40.29.234] Date: Thu, 16 Feb 2006 20:10:31 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Subject: Every 12-hrs -- "ad0: TIMEOUT - WRITE DMA" X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Feb 2006 20:11:31 -0000 For the last 4-days, our (otherwise OK) 5.4-RELEASE machine has been reporting: Feb 12 12:08:05 : ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=2701279 Feb 13 00:08:51 : ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=2701279 Feb 13 12:09:38 : ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=2963331 Feb 14 00:10:24 : ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=2705947 Feb 14 12:11:09 : ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=2706335 Feb 15 00:12:02 : ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=2832383 Feb 15 12:12:57 : ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=139839 Feb 16 00:13:50 : ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=131391 Feb 16 12:14:36 : ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=131391 The system was created Jan 08 and, prior to the above, the ad0: timeout had only been reported twice: Jan 25 11:43:34 : ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=17920255 Feb 6 11:59:42 : ad0: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=2832383 Before to asking here, I did several searches for possible causes. I think I've eliminated disk spin-down and bad-block-mapping -- just before the Feb 15, 12:12 period a 2-gig file was created; leaving the disk 'spinning' and bad-blocks presumably bypassed. Another found item said that some IBM drives recalibrate every 25-hours. Interesting concept, but a different period and without previous history. Lastly, several items referred to changing PREEMPTION but never seemed to reach a final conclusion. I also checked the cron log and found nothing running at the timeout times. So -- can anyone help track this down? Final note: the hardware is an old, resurrected Win98 machine running 24/7 and is used only for email processing. I installed it primarily as a proof of concept, so it can be replaced if necessary. Some specifics: FreeBSD 5.4-RELEASE #0: Sun May 8 10:21:06 UTC 2005 CPU: AMD-K7(tm) Processor (598.84-MHz 686-class CPU) Origin = "AuthenticAMD" Id = 0x612 Stepping = 2 Features=0x81f9ff AMD Features=0xc0400000 real memory = 134152192 (127 MB) avail memory = 121630720 (115 MB) ACPI disabled by blacklist. Contact your BIOS vendor. ad0: 14664MB [29795/16/63] at ata0-master UDMA66 acd0: CDROM at ata1-master PIO4 Thanks for any help!