From owner-freebsd-questions@FreeBSD.ORG Mon Jun 4 17:39:15 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 89B4F1065672 for ; Mon, 4 Jun 2012 17:39:15 +0000 (UTC) (envelope-from kayasaman@gmail.com) Received: from mail-ee0-f54.google.com (mail-ee0-f54.google.com [74.125.83.54]) by mx1.freebsd.org (Postfix) with ESMTP id 1105C8FC08 for ; Mon, 4 Jun 2012 17:39:14 +0000 (UTC) Received: by eeke49 with SMTP id e49so1780339eek.13 for ; Mon, 04 Jun 2012 10:39:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; bh=EWydff7EfZqabqQOyllbNdq0gWAXqISO26/Tn4k48IU=; b=KAcIZdJvmjptv0oHjSc0R51mpM0jQeJnV7QPUvvauShKA4W7aqXmwSIP6eEGEMvOL6 6v3XYzX7n3OEErPVJXOZ9/rPRBYKewv7oLA4DP8T/qvfiW2GPj5YTWtt+Tx0DasQXdzk EmgbVnpdqWXEgY8FyCVN4wjO4CfSa1wMkGMt+NgKMzWC/WeoQoiZtOYPXWy6CwGWvDvy DHT/SqVF8Ax7j5EQg0tv5ee3DTIGdoWO5nk0Sgtsa5sCHfFYRZKbJy3HJ98TJogPORA5 8Q2LIS18/HDj3PAPvoT/WCctvieCmgepls+KBjW+9EMzb9i67sTnyzLVefYx9vozjU5D MBbg== Received: by 10.14.119.144 with SMTP id n16mr5511551eeh.187.1338831553449; Mon, 04 Jun 2012 10:39:13 -0700 (PDT) Received: from X220.optiplex-networks.com (81-178-2-118.dsl.pipex.com. [81.178.2.118]) by mx.google.com with ESMTPS id e45sm39641688eeb.6.2012.06.04.10.39.10 (version=SSLv3 cipher=OTHER); Mon, 04 Jun 2012 10:39:11 -0700 (PDT) Message-ID: <4FCCF2BD.2080805@gmail.com> Date: Mon, 04 Jun 2012 18:39:09 +0100 From: Kaya Saman User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1 MIME-Version: 1.0 To: Wojciech Puchar References: <99.2A.28751.ABF1CCF4@smtp01.insight.synacor.com> <4FCC2483.5080901@gmail.com> <4FCC650A.6000201@dreamchaser.org> <4FCCBD85.4020108@gmail.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd@dreamchaser.org, Thomas Mueller , freebsd-questions@freebsd.org Subject: Re: Strange case of vanishing disk 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: Mon, 04 Jun 2012 17:39:15 -0000 On 06/04/2012 06:26 PM, Wojciech Puchar wrote: >> >> I just "offlined" the system and took a look at the BIOS. The hard >> disk controller was set to "ATA NATIVE", I attempted changing to AHCI >> and the system failed to boot thereafter. > > do you have ahci and ada drivers compiled in? > >> >> Booting into my rescue CD of FreeSBIE, with AHCI enabled only showed >> "ad4" (the troubled disk) to be registering. > > showing up some, but not all disks after rebooting is quite common to > the problem i described. > > POWERING OFF (by disconnecting electricity, not by power button), > waiting a minute, and powering on "fixes" the problem for some time. Thanks Wojciech for the responses! It could be the motherboard; it's an Intel Core2Quad machine! I am looking at alternatives like Portwell: http://www.portwell.nl/products/WADE-8011.html http://www.portwell.nl/products/WADE-8012.html which are Xeon and i7 based system boards respectively and also industrial meaning that they are better designed then consumer desktop style boards. It will be interesting to test once my new rackmount chassis comes along with a 400Watt PSU where the system will then go and see what happens from there...... This system has been up for 3+ years before running 3x disks; one SSD and 2x 2TB drives in a ZFS pool. I only have 4GB RAM in here which may be an issue since I am also using round 5x Jails and 2x Apache Tomcat and 2x Postgresql databases inside to host separate instances of Xwiki - yep Java eats RAM for breakfast, lunch, and dinner :-) - will soon be migrating this stuff off the box but not for now as need some ca$h first ;-) Will wait for my new chassis then see what happens! Regards, Kaya