From owner-freebsd-fs@FreeBSD.ORG Sat Dec 5 20:06:35 2009 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9E367106566C for ; Sat, 5 Dec 2009 20:06:35 +0000 (UTC) (envelope-from baldur@foo.is) Received: from gremlin.foo.is (gremlin.foo.is [194.105.250.10]) by mx1.freebsd.org (Postfix) with ESMTP id 5F74C8FC0C for ; Sat, 5 Dec 2009 20:06:35 +0000 (UTC) Received: by gremlin.foo.is (Postfix, from userid 1000) id 7BB69DA889; Sat, 5 Dec 2009 20:06:34 +0000 (GMT) Date: Sat, 5 Dec 2009 20:06:34 +0000 From: Baldur Gislason To: Rich Message-ID: <20091205200634.GS73250@gremlin.foo.is> References: <20091205170400.GM73250@gremlin.foo.is> <8555674.871260033069220.JavaMail.root@zimbra> <20091205184112.GP73250@gremlin.foo.is> <5da0588e0912051052p25fb743ele098ed9cb9de8fa0@mail.gmail.com> <20091205190641.GQ73250@gremlin.foo.is> <20091205191526.GR73250@gremlin.foo.is> <5da0588e0912051121i32d09b37xe44057add4c052f3@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5da0588e0912051121i32d09b37xe44057add4c052f3@mail.gmail.com> User-Agent: Mutt/1.5.18 (2008-05-17) Cc: freebsd-fs@freebsd.org Subject: Re: ZFS and reordering drives X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Dec 2009 20:06:35 -0000 It is indeed. root@enigma:~# smartctl -a /dev/ad4 | grep Capa User Capacity: 1,000,204,886,016 bytes root@enigma:~# smartctl -a /dev/ad6 | grep Capa User Capacity: 1,000,204,886,016 bytes root@enigma:~# smartctl -a /dev/ad16 | grep Capa User Capacity: 1,000,203,804,160 bytes root@enigma:~# smartctl -a /dev/ad20 | grep Capa User Capacity: 1,000,204,886,016 bytes The problematic drive now seems to have 1MB less capacity than the rest. I uploaded the output from smartctl -a for all the drives to http://foo.is/~baldur/brokenzfs They're all identical drives, bought at the same time and the same place. root@enigma:~# smartctl -a /dev/ad4 | grep WD Device Model: WDC WD10EADS-00L5B1 Serial Number: WD-WCAU48443245 root@enigma:~# smartctl -a /dev/ad6 | grep WD Device Model: WDC WD10EADS-00L5B1 Serial Number: WD-WCAU48472608 root@enigma:~# smartctl -a /dev/ad16 | grep WD Device Model: WDC WD10EADS-00L5B1 Serial Number: WD-WCAU48509212 root@enigma:~# smartctl -a /dev/ad20 | grep WD Device Model: WDC WD10EADS-00L5B1 Serial Number: WD-WCAU48410170 The fact that it has shrunk in size explains why the labels at the end of the drive got lost. Baldur On Sat, Dec 05, 2009 at 02:21:09PM -0500, Rich wrote: > That's quite fascinating. > > What are the details on the drives? > > [relatedly, use smartctl to tell you if there are any unrecoverable > sectors? It may have shrunk the visible drive size, though I find that > unlikely.] > > - Rich