From owner-freebsd-questions@FreeBSD.ORG Thu Jun 27 16:16:58 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 225452A8 for ; Thu, 27 Jun 2013 16:16:58 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from st11p05mm-asmtp001.mac.com (st11p05mm-asmtpout004.mac.com [17.172.108.249]) by mx1.freebsd.org (Postfix) with ESMTP id F1777104A for ; Thu, 27 Jun 2013 16:16:57 +0000 (UTC) Received: from [17.151.72.149] (unknown [17.151.72.149]) by st11p05mm-asmtp001.mac.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Jan 3 2012)) with ESMTPSA id <0MP2008DW541Z830@st11p05mm-asmtp001.mac.com> for freebsd-questions@freebsd.org; Thu, 27 Jun 2013 15:16:51 +0000 (GMT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.10.8794,1.0.431,0.0.0000 definitions=2013-06-27_06:2013-06-27,2013-06-27,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=6.0.2-1305010000 definitions=main-1306270105 Content-type: text/plain; charset=utf-8 MIME-version: 1.0 (Mac OS X Mail 6.5 \(1508\)) Subject: Re: Troubleshooting a gmirror disk marked broken From: Charles Swiger In-reply-to: <20130627023837.GA7685@sputnjik.localdomain> Date: Thu, 27 Jun 2013 08:16:48 -0700 Content-transfer-encoding: quoted-printable Message-id: <36C962B9-ABC4-45E3-AC94-46D6CEE960E1@mac.com> References: <20130627023837.GA7685@sputnjik.localdomain> To: =?utf-8?Q?Nikola_Pavlovi=C4=87?= X-Mailer: Apple Mail (2.1508) Cc: freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 27 Jun 2013 16:16:58 -0000 Hi-- On Jun 26, 2013, at 7:38 PM, Nikola Pavlovi=C4=87 = wrote: [ ... ] > At the moment I'm attaching smartctl -a results for both disks (ad4 = was > marked broken). As I'm completely useless in deciphering smartctl > results (apart from being thought by experience to pretty much > ignore(tm) the 'Pre-fail' statuses), I'd appreciate assessment from = more > knowledgeable people. As Adam said, your drives haven't failed, but they are on the way out. Pay close attention to Reallocated_Sector_Ct, especially if it starts jumping upwards. You might also want to check the thermals; the Seagate is running at = 52C, which is significantly hotter than it ought to be, except for maybe a = laptop. I'd much rather see a drive running below 40C.... If you haven't rebuilt the mirror already, running a full disk read scan against both drives (ie, via "dd if=3D/dev/ad4 of=3D/dev/null bs=3D1m" = or similar) might be prudent. That will help identify/migrate any sectors which are failing but still recoverable via ECC to the spare sectors. Regards, --=20 -Chuck