From owner-freebsd-stable@FreeBSD.ORG Mon Feb 7 04:55:03 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 802B1106564A for ; Mon, 7 Feb 2011 04:55:03 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from qmta07.emeryville.ca.mail.comcast.net (qmta07.emeryville.ca.mail.comcast.net [76.96.30.64]) by mx1.freebsd.org (Postfix) with ESMTP id 5D50B8FC15 for ; Mon, 7 Feb 2011 04:55:02 +0000 (UTC) Received: from omta11.emeryville.ca.mail.comcast.net ([76.96.30.36]) by qmta07.emeryville.ca.mail.comcast.net with comcast id 4ssD1g0030mlR8UA7sv2ok; Mon, 07 Feb 2011 04:55:02 +0000 Received: from koitsu.dyndns.org ([98.248.34.134]) by omta11.emeryville.ca.mail.comcast.net with comcast id 4sv11g00R2tehsa8Xsv2eP; Mon, 07 Feb 2011 04:55:02 +0000 Received: by icarus.home.lan (Postfix, from userid 1000) id 939C69B422; Sun, 6 Feb 2011 20:55:01 -0800 (PST) Date: Sun, 6 Feb 2011 20:55:01 -0800 From: Jeremy Chadwick To: Greg Bonett Message-ID: <20110207045501.GA15568@icarus.home.lan> References: <1297026074.23922.8.camel@ubuntu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1297026074.23922.8.camel@ubuntu> User-Agent: Mutt/1.5.21 (2010-09-15) Cc: freebsd-stable Subject: Re: 8.1 amd64 lockup (maybe zfs or disk related) 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, 07 Feb 2011 04:55:03 -0000 On Sun, Feb 06, 2011 at 01:01:14PM -0800, Greg Bonett wrote: > Hi all, > I am experiencing hard lockup when running 8.1-RELEASE amd64. The last > two times it has happened I was running a zpool scrub (high cpu and io > load). /var/log/messages has some errors looking like: > kernel: ad0: FAILURE - READ_DMA4 > > but these didn't seem to correspond to the exact time of the lockup. > > any suggestions? Given that you're running 8.1-RELEASE, what sort of ZFS tunings are you using in /boot/loader.conf? Tuning is required on this version. The ad0 READ_DMA48 errors could indicate you have a hard disk with bad blocks or is going bad in a different manner. Please install ports/sysutils/smartmontools and provide output of "smartctl -a /dev/ad0" here and I can help you determine that. -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP 4BD6C0CB |