From owner-freebsd-questions@FreeBSD.ORG Mon Jun 4 02:59:26 2012 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 087BA1065672 for ; Mon, 4 Jun 2012 02:59:26 +0000 (UTC) (envelope-from kayasaman@gmail.com) Received: from mail-wi0-f172.google.com (mail-wi0-f172.google.com [209.85.212.172]) by mx1.freebsd.org (Postfix) with ESMTP id 8AD608FC16 for ; Mon, 4 Jun 2012 02:59:25 +0000 (UTC) Received: by wibhj8 with SMTP id hj8so1943190wib.13 for ; Sun, 03 Jun 2012 19:59:18 -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=ZP3tCsrxMPI8E4KCHrpiv6i2g+rMGYN4p46PGUK4nQ0=; b=PEM8MwZnwpi3R4j8wqbcLJkTilLqsR9JovUoP1VznMv6IpyZcGiKJNW8qwCb6zWZXK 1EsUEPlOqScMtPit2n/LFKsX1DAizTyYL79D2o/vC1RGqUYYvDX6jZiw2yPuZJmp2aM9 Y8deeJn6XHxEzQf0KRbsMxOt2I2rKKqlDwZvNFTNVyt/TbN/4KBbVaxP4O0AZicYhsPK AEqzcwlNpVYeffuInVsjjwOH/2/Nu/xbX/76RrWiA0J48RJiO0UfGxGgJBNySXZPmyRU 6oAU6ZFTarpwOWjT6rx2EQBcIcOq+VwFtY/ClQkCLC4XKTr4AG92j2j8FJifteEB1Qgi OYgA== Received: by 10.216.208.151 with SMTP id q23mr9836372weo.20.1338778758703; Sun, 03 Jun 2012 19:59:18 -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 bn9sm17148148wib.5.2012.06.03.19.59.16 (version=SSLv3 cipher=OTHER); Sun, 03 Jun 2012 19:59:17 -0700 (PDT) Message-ID: <4FCC2483.5080901@gmail.com> Date: Mon, 04 Jun 2012 03:59:15 +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: Thomas Mueller References: <99.2A.28751.ABF1CCF4@smtp01.insight.synacor.com> In-Reply-To: <99.2A.28751.ABF1CCF4@smtp01.insight.synacor.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: 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 02:59:26 -0000 this is a very strange issue but I guess will either be related to 2 things, PSU not being powerful enough or disk controller simply being crap. > Here's what's going on. I have a little Chenbro 4 disk mini-ITX NAS > server with 2x 2TB disks and 2x4TB disks as storage - all spread out > over 2 ZFS storage pools. Additionally I am running the root file system > on a 40GB SSD. [...] > _______ > > One thing I can think of is to disconnect the questionable disk from the RAID controller card and connect it directly to the motherboard. > > Then you'd know whether the fault is with the hard drive or the RAID controller. > > PSU = power supply unit? 180 watts seems very little, I didn't know any modern system could run on so little. I thought the minimum would be around 400 watts, and this would not allow for a powerful gaming graphics card. > > Maybe you need to replace the power supply with something having more watts, but make sure it will physically fit. > > Tom Thanks for the response! Here's some more info that I managed to dig up: Jun 4 02:39:19 Zeta-Ray root: ZFS: vdev I/O failure, zpool=ZFS_POOL_2 path=/dev/ad4 offset=270336 size=8192 error=6 Jun 4 02:39:19 Zeta-Ray kernel: ata2: port is not ready (timeout 15000ms) tfd = 000000ff Jun 4 02:39:19 Zeta-Ray kernel: ata2: hardware reset timeout Jun 4 02:39:19 Zeta-Ray kernel: unknown: TIMEOUT - WRITE_DMA48 retrying (1 retry left) LBA=269091394 Yeah, 180 Watts is what comes with the chassis as it's an external power supply. Additionally the system is a Mini-ITX so that would account for less power usage however, in this case I think it might be the PSU that's simply not providing enough power..... I will definitely try sticking the "downed" disk into the motherboard controller directly as that will tell me if the disk is the issue or not. I'm also thinking to eliminate the issue of using external controller to just get a new system board that 6x SATA connectors on it instead of 4 as per my board. Regards, Kaya