From owner-freebsd-hackers@FreeBSD.ORG  Sun Jun 24 17:05:37 2012
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id B6BE0106566B
	for <freebsd-hackers@freebsd.org>; Sun, 24 Jun 2012 17:05:37 +0000 (UTC)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from wojtek.tensor.gdynia.pl (wojtek.tensor.gdynia.pl [89.206.35.99])
	by mx1.freebsd.org (Postfix) with ESMTP id E30EA8FC08
	for <freebsd-hackers@freebsd.org>; Sun, 24 Jun 2012 17:05:36 +0000 (UTC)
Received: from wojtek.tensor.gdynia.pl (localhost [127.0.0.1])
	by wojtek.tensor.gdynia.pl (8.14.5/8.14.5) with ESMTP id q5OH5Zaw073166
	for <freebsd-hackers@freebsd.org>;
	Sun, 24 Jun 2012 19:05:35 +0200 (CEST)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from localhost (wojtek@localhost)
	by wojtek.tensor.gdynia.pl (8.14.5/8.14.5/Submit) with ESMTP id
	q5OH5ZlX073163 for <freebsd-hackers@freebsd.org>;
	Sun, 24 Jun 2012 19:05:35 +0200 (CEST)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Date: Sun, 24 Jun 2012 19:05:35 +0200 (CEST)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: freebsd-hackers@freebsd.org
In-Reply-To: <alpine.BSF.2.00.1206231947160.40095@wojtek.tensor.gdynia.pl>
Message-ID: <alpine.BSF.2.00.1206241856090.73001@wojtek.tensor.gdynia.pl>
References: <20120623162415.303430@gmx.com>
	<alpine.BSF.2.00.1206231947160.40095@wojtek.tensor.gdynia.pl>
User-Agent: Alpine 2.00 (BSF 1167 2008-08-23)
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.2.7
	(wojtek.tensor.gdynia.pl [127.0.0.1]);
	Sun, 24 Jun 2012 19:05:35 +0200 (CEST)
Subject: reason for "magic" crashes.
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 24 Jun 2012 17:05:37 -0000

i've got third crash third week in a row.

Every time in sunday after 18:00, every time with rsync process (which 
means rsync based backup that is done every day, not just in sunday!),

you may see a crash (viewed from KVM) at

http://www.tensor.gdynia.pl/~wojtek/crash.png

what is important - syncing disk doesn't go on, system hangs here.

For 99% system is not overheating at sunday, but i will be 100% sure as i 
added ipmitool sensor logged from cron every 5 minutes.

Please give me an idea what to check.


There is nothing in cron that is done at sunday.

i don't run "periodic" stuff in /etc/crontab