From owner-freebsd-current@FreeBSD.ORG Tue Mar 6 19:11:09 2007 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 6662B16A407; Tue, 6 Mar 2007 19:11:09 +0000 (UTC) (envelope-from raj@csub.edu) Received: from mailhub.csub.edu (mailhub.csub.edu [136.168.1.56]) by mx1.freebsd.org (Postfix) with ESMTP id 1D86013C474; Tue, 6 Mar 2007 19:11:09 +0000 (UTC) (envelope-from raj@csub.edu) Received: from [136.168.10.65] (cserv65.csub.edu [136.168.10.65]) (authenticated bits=0) by mailhub.csub.edu (8.13.8/8.13.8) with ESMTP id l26Ikoto010668 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 6 Mar 2007 10:46:50 -0800 (PST) (envelope-from raj@csub.edu) Message-ID: <45EDB716.6070303@csub.edu> Date: Tue, 06 Mar 2007 10:46:46 -0800 From: Russell Jackson User-Agent: Thunderbird 1.5.0.9 (X11/20070215) MIME-Version: 1.0 To: Barry Pederson References: <20070304123801.GA22350@garage.freebsd.pl> <20070306005831.22fb6115.nork@FreeBSD.org> <70e8236f0703060725j3487764enffe1ad524a098c96@mail.gmail.com> <45ED9289.4090001@barryp.org> In-Reply-To: <45ED9289.4090001@barryp.org> Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms030107020508050708000204" Cc: freebsd-fs@freebsd.org, Joao Barros , freebsd-current@freebsd.org, Pawel Jakub Dawidek Subject: Re: ZFS port to FreeBSD: 2nd patchset available. X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Tue, 06 Mar 2007 19:11:09 -0000 This is a cryptographically signed message in MIME format. --------------ms030107020508050708000204 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Barry Pederson wrote: > Joao Barros wrote: > >> After some tries I finally got it to buildworld, but at 3am I never >> got to test anything other than 'kldload zfs' >> >> I was reading the man pages and I was wondering if files are supported >> devices like in this example: >> >> Example 4 Creating a ZFS Storage Pool by Using Files >> >> The following command creates an unmirrored pool using files. While >> not recommended, a pool based on files can be useful for experimental >> purposes. >> >> # zpool create tank /path/to/file/a /path/to/file/b >> >> I'd have to feed some noisy disks to my machine if file devs are not >> supported -.- > > I tried something like that, with a 512mb file: > > dd if=/dev/zero of=/tmp/foo bs=1048976 count=512 > zpool create tank /tmp/foo > > but it comes back with > > cannot use '/dev//tmp/foo': must be a GEOM provider > > mdconfig is one way to go here, creating a memory disk based on that > file. and then creating a pool from that > > mdconfig -a -t vnode -f /tmp/foo > > (comes back with "md0" perhaps, meaning it's created a /dev/md0 ) > > zpool create tank md0 > > and you should be in business. > > Barry You can also use ggatel to make a GEOM provider out of a file. -- Russell A. 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