From owner-freebsd-questions@FreeBSD.ORG Wed Dec 17 20:50:35 2014 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 115CE3F1 for ; Wed, 17 Dec 2014 20:50:35 +0000 (UTC) Received: from mail-ig0-x229.google.com (mail-ig0-x229.google.com [IPv6:2607:f8b0:4001:c05::229]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id C7A901AAD for ; Wed, 17 Dec 2014 20:50:34 +0000 (UTC) Received: by mail-ig0-f169.google.com with SMTP id hl2so10137959igb.2 for ; Wed, 17 Dec 2014 12:50:34 -0800 (PST) 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:subject:references :in-reply-to:content-type:content-transfer-encoding; bh=w+J1qb57sPfmRh3SsH6Gh56Qr1slxtjifD7RQ1VySYM=; b=DiqPZNk4gLr3Ympy01fMZ9XmKnB5Mx2TaCNP+xLKeENBFtiHRe4Ivodb8Ri+e9GO9z j20vjRPrnWthq4V8WxtASV0FPy6/5SPdn5/dpBWtsL9BJ85VVNX+sdiWNCABOOLvqplm 47CZACV2+0yt5DRdI7zO05r4X7f74BFLOOHXEowHHwoar4/8cVKEimPfOt652YPqdifj C4LKrU/Zy41FVF+jKoCBfsWA1f1QuboGIK/FVPQ7Qx8/BDoongqJq6v80TQ//KDktmNw 3/OPKjzWU1TaWO/HFebaAnJvQK1/xzwzepy34aont6UVE/CeL0NpYmVcWXYAAn/IueER Rw7Q== X-Received: by 10.50.148.101 with SMTP id tr5mr10230369igb.12.1418849434226; Wed, 17 Dec 2014 12:50:34 -0800 (PST) Received: from localhost.localdomain ([2601:7:6c80:6f00::a767]) by mx.google.com with ESMTPSA id l3sm2780348igj.9.2014.12.17.12.50.33 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 17 Dec 2014 12:50:33 -0800 (PST) Message-ID: <5491EC98.3000507@gmail.com> Date: Wed, 17 Dec 2014 13:50:32 -0700 From: jd1008 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: Mike Tancsa , freebsd-questions@freebsd.org Subject: Re: zfs and 512/4096 sector sizes References: <5491E462.2020902@sentex.net> <5491E5A0.9090306@gmail.com> <5491E61B.9070505@bluerosetech.com> <5491E775.5010403@gmail.com> <5491E82D.8090105@sentex.net> <5491EA62.2080401@gmail.com> <5491EBA1.6080606@sentex.net> In-Reply-To: <5491EBA1.6080606@sentex.net> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 17 Dec 2014 20:50:35 -0000 On 12/17/2014 01:46 PM, Mike Tancsa wrote: > On 12/17/2014 3:41 PM, jd1008 wrote: >> One last suggestion: >> dismantle the whole pool (i.e. remove the drives) >> and rebuild it fresh using only 512 byte sector drives. >> Whole adding the drives back in, one at a time, >> recheck the status after each add and see if the >> error status appears. > > I was hoping for a rather less intrusive option than backing up 10TB > of data. Although its a backup of a backup (ie offsite) I was hoping > there was a less drastic option available. > > I am confident if I "started fresh" with just the 512k sector drives, > it will work fine. The question which remains is, if I replace a > single 512 sector drive with a 4k sector drive, and then replace the > 4k with another 512k, is there a way to remove said warning, or has > something changed about the pool that cannot be undone > > ---Mike > > > Can you not dismantle the pool without destroying the data? I mean what if you took it offline, rebuilt the pool with the same drives in the same slots (one at a time - and recheck status)?