From owner-freebsd-current@FreeBSD.ORG Fri Jan 11 10:39:16 2013 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id BC107C66 for ; Fri, 11 Jan 2013 10:39:16 +0000 (UTC) (envelope-from tevans.uk@googlemail.com) Received: from mail-vc0-f178.google.com (mail-vc0-f178.google.com [209.85.220.178]) by mx1.freebsd.org (Postfix) with ESMTP id 62DBB266 for ; Fri, 11 Jan 2013 10:39:16 +0000 (UTC) Received: by mail-vc0-f178.google.com with SMTP id l6so1273091vcl.23 for ; Fri, 11 Jan 2013 02:39:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=SyCcGXqoP4Y8m+krcHz7jbTaHAradWovBvS6Z15xFYk=; b=ZoeXeR8jgipoWT3NNnshw153qFpG1fh3gZeFcBzYUZrVCv0f6b/Nk+fDYKA+otWrbt yY0iSkpV5QIaGPIrWHqKSf9FfXYGV1f5V7XTcwOAVLhXx2fv4IQ3nm0fC2XnTXOd0ZyW fw62Qs125uKEuPNXDXZ2JVe13igZ52ov6WCr9eodZPNYlKU5lwH8XoC8wLF+kJl7TFvo n+Zm1Q0xpXiIGOoKazgdxh/tdTGxrGldWVXF5YjaWrd8JazPxadLZSTgNgyxJlVQyQ/z fFCUtogcRLJ7Za250Z5RUb61y2/sU8ed5ZpJ3EAyjedOR4mgzOghWN1u+d2LeKu1yZmc GK9A== MIME-Version: 1.0 Received: by 10.58.4.231 with SMTP id n7mr14783943ven.26.1357900750401; Fri, 11 Jan 2013 02:39:10 -0800 (PST) Received: by 10.59.13.73 with HTTP; Fri, 11 Jan 2013 02:39:10 -0800 (PST) In-Reply-To: <50EFBAEA.3070200@zedat.fu-berlin.de> References: <50EFBAEA.3070200@zedat.fu-berlin.de> Date: Fri, 11 Jan 2013 10:39:10 +0000 Message-ID: Subject: Re: Expanding ZFS RAIDZ on the fly? From: Tom Evans To: "O. Hartmann" Content-Type: text/plain; charset=UTF-8 Cc: Current FreeBSD X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Jan 2013 10:39:16 -0000 On Fri, Jan 11, 2013 at 7:10 AM, O. Hartmann wrote: > My question may sound naiv, sorry. > > I have already set up a RAIDZ (on FreeBSD 10.0-CUR), comprised with > three 3 TB disks. I'd like to expand the array with an additional disk - > on the fly. > > oh > It's not possible to expand by just 1 disk. Expanding with another 3 disks is possible though, or "backup, destroy, create, restore". Expanding or reducing the number of disks in a raidz is the mythical block pointer rewrite functionality, google will tell more. Cheers Tom