From owner-freebsd-questions@FreeBSD.ORG Sun Sep 18 15:13:35 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 70E1B106566B for ; Sun, 18 Sep 2011 15:13:35 +0000 (UTC) (envelope-from fbsd8@a1poweruser.com) Received: from mail-03.name-services.com (mail-03.name-services.com [69.64.155.195]) by mx1.freebsd.org (Postfix) with ESMTP id 5592A8FC12 for ; Sun, 18 Sep 2011 15:13:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; q=dns/txt; s=DKIM-NAME-SERVICES; d=a1poweruser.com; h=From:To:Cc:Subject:Message-ID:X-Sender:X-Envelope-From; l=500; bh=BIara4x3EkZTzdUL8B3J4QG95wTllr+7QlX9X1bA1+Y=; b=SLcPP5rd1ADVA2xD76L8AvhMUF2ohrVYGQUvoqgv7rnyl12BryEjKMYzvZK8mAm9nv+wNQD1GyqhY2s5+F9N0xse0Zz+xg6sHK6oGUUGZs+2f6VeRhlvgGTJuIZtL0U1vTcYj4KV3kfarE6CRB+szWazQbuQ7lzV7O/sPJy+k9c= Received: from [192.168.1.64] ([76.240.47.196]) by mail-03.name-services.com with Microsoft SMTPSVC(6.0.3790.4675); Sun, 18 Sep 2011 08:13:35 -0700 Message-ID: <4E760AA1.2040709@a1poweruser.com> Date: Sun, 18 Sep 2011 11:13:37 -0400 From: Fbsd8 User-Agent: Thunderbird 2.0.0.17 (Windows/20080914) MIME-Version: 1.0 To: Graeme Dargie References: <0EE458C34045A44DBC2CA2DC5CEB42B52344BE4831@mercury.universe.galaxy.lcl> In-Reply-To: <0EE458C34045A44DBC2CA2DC5CEB42B52344BE4831@mercury.universe.galaxy.lcl> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 18 Sep 2011 15:13:35.0799 (UTC) FILETIME=[895EE470:01CC7615] X-Sender: fbsd8@a1poweruser.com X-Envelope-From: fbsd8*a1poweruser.com Cc: "'freebsd-questions@freebsd.org'" Subject: Re: System locking up. 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: Sun, 18 Sep 2011 15:13:35 -0000 Graeme Dargie wrote: > Hi All, > > I have a system that is being problematic, I suspect but I cannot say for sure it is maybe related to ZFS as I have a fairly large ZFS pool on the machine. The system will just lock up, local console does not respond to the keyboard, num lock still changes the led on the keyboard, the system still responds to pings but you cannot ssh to the unit. The behaviour is random the system can be running for 50 days plus with no issues then suddenly it enters this state, the error logs do not show anything. > > System 8.2-RELEASE FreeBSD 8.2-RELEASE #0 > AMD 64 > > Running on an AMD x2 5600 > 4gb of DDR2 > Gmirror 80gb boot disks > 6 x 1.5TB SATA II disks using AHCI > > > Loader.conf > > vfs.zfs.prefetch_disable=0 > //vfs.zfs.txg.timeout="5" > vm.kmem_size="1024M" > vm.kmem_size_max="1024M" > vfs.zfs.arc_max="100M" > vfs.zfs.vdev.cache.size="100M" > > ZFS filesystem version 4 > ZFS storage pool version 15 > > Is this likely to be a case of just not enough ram? Or is there some other trouble shooting I could do to try and nail down what is going on as it tends to happen when the ZFS zpool is being accessed heavily. > > Regards > > Graeme > My money is on, its a over heating problem or power supply problem. Open the box to get more air circulating over the motherboard. If the problem continues them replace power supply with one that outputs more watts. You have a lot of hardware on the current power supply and under heavy demand it may not be able to fulfill the power demand the hardware requires.