From owner-freebsd-questions@FreeBSD.ORG Tue Jul 16 19:09:01 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 32B23625 for ; Tue, 16 Jul 2013 19:09:01 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from st11p05mm-asmtp002.mac.com (st11p05mm-asmtp005.mac.com [17.172.108.250]) by mx1.freebsd.org (Postfix) with ESMTP id 0C9E7BDF for ; Tue, 16 Jul 2013 19:09:00 +0000 (UTC) Received: from cswiger1.apple.com (unknown [17.209.8.53]) by st11p05mm-asmtp002.mac.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Jan 3 2012)) with ESMTPSA id <0MQ100714JQCVO50@st11p05mm-asmtp002.mac.com> for freebsd-questions@freebsd.org; Tue, 16 Jul 2013 18:08:38 +0000 (GMT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.10.8794,1.0.431,0.0.0000 definitions=2013-07-16_08:2013-07-16,2013-07-16,1970-01-01 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-1307160141 Content-type: text/plain; charset=us-ascii MIME-version: 1.0 (Mac OS X Mail 6.5 \(1508\)) Subject: Re: to gmirror or to ZFS From: Charles Swiger In-reply-to: Date: Tue, 16 Jul 2013 11:08:36 -0700 Content-transfer-encoding: quoted-printable Message-id: <6CE5718E-2646-4D8C-AF98-37384B8851C5@mac.com> References: <4DFBC539-3CCC-4B9B-AB62-7BB846F18530@gmail.com> <976836C5-F790-4D55-A80C-5944E8BC2575@gmail.com> <51E51558.50302@ShaneWare.Biz> <51E52190.7020008@fjl.co.uk> To: Johan Hendriks X-Mailer: Apple Mail (2.1508) Cc: FreeBSD - 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: Tue, 16 Jul 2013 19:09:01 -0000 Hi-- On Jul 16, 2013, at 10:33 AM, Johan Hendriks = wrote: [ ... ] > I would us a zfs for the os. > I have a couple of servers that did not survive a power failure with > gmirror. > The problems i had was when the power failed one disk was in a = rebuilding > state and then when the background fsck started or was busy for some = time > it would crash the whole server. Well, "don't do that". :-) Seriously, bring up the box on one disk, force a foreground fsck if = needed to get the filesystem to known clean state, and then rebuild the mirror. Mixing the mirror rebuild with something like an fsck will just thrash = the disks. [ ... ] > Before people tell me to use an UPS, i used a UPS but the damn thing = gave > way itself. Then after it came back from the warranty repair it gave = way again. Grr. That's when you want find another UPS vendor. Regards, --=20 -Chuck