From owner-freebsd-stable@FreeBSD.ORG Mon Feb 14 00:37:07 2011 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id ED0AA106566C for ; Mon, 14 Feb 2011 00:37:07 +0000 (UTC) (envelope-from corky1951@comcast.net) Received: from qmta02.emeryville.ca.mail.comcast.net (qmta02.emeryville.ca.mail.comcast.net [76.96.30.24]) by mx1.freebsd.org (Postfix) with ESMTP id D01618FC17 for ; Mon, 14 Feb 2011 00:37:07 +0000 (UTC) Received: from omta03.emeryville.ca.mail.comcast.net ([76.96.30.27]) by qmta02.emeryville.ca.mail.comcast.net with comcast id 7c4o1g0050b6N64A2cd7uG; Mon, 14 Feb 2011 00:37:07 +0000 Received: from comcast.net ([98.203.142.76]) by omta03.emeryville.ca.mail.comcast.net with comcast id 7cd51g00A1f6R9u8Pcd5Tu; Mon, 14 Feb 2011 00:37:06 +0000 Received: by comcast.net (sSMTP sendmail emulation); Sun, 13 Feb 2011 16:37:04 -0800 Date: Sun, 13 Feb 2011 16:37:04 -0800 From: Charlie Kester To: freebsd-stable@freebsd.org Message-ID: <20110214003704.GA2049@comcast.net> Mail-Followup-To: freebsd-stable@freebsd.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline User-Agent: Mutt/1.4.2.3i X-Mailer: Mutt 1.4.2.3i X-Composer: Vim 7.3 Subject: 8.2-PRERELEASE generating warnings re my hard drive X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Feb 2011 00:37:08 -0000 I'm running 8-STABLE, i386 architecture, and yesterday I updated to the latest version with cvsup. After installing the kernel and rebooting, I see the following messages on the console: ad4: WARNING - SETFEATURES SET TRANSFER MODE requeued due to channel reset ad4: interrupt on idle channel ignored ad4: WARNING - SETFEATURES SET TRANSFER MODE requeued due to channel reset ad4: interrupt on idle channel ignored (repeated several times, and then the following:) ad4: WARNING - SETFEATURES SET TRANSFER MODE taskqueue timeout - completing request directly ad4: 238475MB at ata2-master UDMA100 SATA 1.5Gb/s (shortly afterwards, I see this:) Trying to mount root from ufs:/dev/ad4s1a ad4: WARNING - READ_DMA requeued due to channel reset LBA=33963227 ata2: FAILURE - already active DMA on this device ata2: setting up DMA failed g_vfs_done():ad4s1f[READ(offset=12103825408, length=2048)]error = 5 ad4: WARNING - READ_DMA requeued due to channel reset LBA=705199 ata2: FAILURE - already active DMA on this device ata2: setting up DMA failed (which then repeats many times with different LBA and offset values.) Similar messages appear after bootup is completed and I've logged in. They seem to appear whenever any process accesses the hard drive. I reverted back to my previous build of the kernel, dated 3 Feb 2011, and these messages no longer appear. smartctl reports that the drive is running without any errors or incipient failures. So my question is, what's going on here? Is this something I should worry about? If it's a problem with my kernel config, what parameters should I be looking at? Motherboard: Intel DM510 with builtin IDE controller.