From owner-freebsd-stable@FreeBSD.ORG Mon Jan 30 11:28:43 2012 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 878AB106564A for ; Mon, 30 Jan 2012 11:28:43 +0000 (UTC) (envelope-from adams-freebsd@ateamsystems.com) Received: from tali.ateamservers.com (tali.ateamservers.com [69.55.231.82]) by mx1.freebsd.org (Postfix) with ESMTP id 711608FC14 for ; Mon, 30 Jan 2012 11:28:43 +0000 (UTC) Received: from [192.168.15.220] (unknown [118.175.84.92]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by tali.ateamservers.com (Postfix) with ESMTPSA id 892ED12E9C62 for ; Mon, 30 Jan 2012 06:12:22 -0500 (EST) Message-ID: <4F267B14.4060200@ateamsystems.com> Date: Mon, 30 Jan 2012 18:12:20 +0700 From: Adam Strohl Organization: A-Team Systems User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:9.0) Gecko/20111222 Thunderbird/9.0.1 MIME-Version: 1.0 To: FreeBSD-Stable ML Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: FreeBSD 9 crash/deadlock when dump(8)ing file system with journaling enabled. 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, 30 Jan 2012 11:28:43 -0000 A few days ago I discovered that running dump(8) on a file system which has journaled soft updates enabled causes the machine to become unresponsive. This is using FreeBSD 9.0-R. I can still interact with the system a little bit (typing echos back) but never get a response to any action. It seems like there is an I/O issue (deadlock or overload) and CPU usage spikes as well. Resetting the machine seems to be the only solution once this occurs (CTRL-C, CTRL-ALT-DEL, logging in again, etc all fail). Disclaimer: I have only tested this as a VM under ESXi 5.0 as I don't have access to any physical servers with 9.0 on them that I can test with (I will soon though). As a side note this is the same issue reported here: http://forums.freebsd.org/showthread.php?t=25787 For now I've turned off journaling (soft updates seem fine) and that works around the issue. Let me know if I can provide more details etc! -- Adam Strohl A-Team Systems