From owner-freebsd-fs@FreeBSD.ORG Wed Mar 2 00:00:36 2011 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 B5051106564A for ; Wed, 2 Mar 2011 00:00:36 +0000 (UTC) (envelope-from joe@tao.org.uk) Received: from alpha.tao.org.uk (alpha.tao.org.uk [212.42.1.232]) by mx1.freebsd.org (Postfix) with ESMTP id 792348FC0A for ; Wed, 2 Mar 2011 00:00:36 +0000 (UTC) Received: from localhost (alpha.tao.org.uk [212.42.1.232]) by alpha.tao.org.uk (Postfix) with ESMTP id 2E66D1077158; Wed, 2 Mar 2011 00:00:35 +0000 (GMT) Received: from alpha.tao.org.uk ([212.42.1.232]) by localhost (mail.tao.org.uk [212.42.1.232]) (amavisd-maia, port 10024) with LMTP id 42028-05; Wed, 2 Mar 2011 00:00:24 +0000 (GMT) Received: from [90.155.77.76] (unknown [90.155.77.76]) (Authenticated sender: joemail@alpha.tao.org.uk) by alpha.tao.org.uk (Postfix) with ESMTPA id 8A8E21077152; Wed, 2 Mar 2011 00:00:24 +0000 (GMT) Mime-Version: 1.0 (Apple Message framework v1081) Content-Type: text/plain; charset=us-ascii From: Dr Josef Karthauser In-Reply-To: <615F1346-E830-42E2-B229-4181B8BC56BD@exonetric.com> Date: Wed, 2 Mar 2011 00:00:24 +0000 Content-Transfer-Encoding: quoted-printable Message-Id: <53FA69D2-2EF0-4CBF-985B-6E710F15FE02@tao.org.uk> References: <0E00DAFC-C39F-47DC-B9AF-16419C20997F@tao.org.uk> <615F1346-E830-42E2-B229-4181B8BC56BD@exonetric.com> To: Mark Blackman X-Mailer: Apple Mail (2.1081) X-Virus-Scanned: Maia Mailguard 1.0.2a Cc: freebsd-fs@freebsd.org Subject: Re: ZFS on a single disk? 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: Wed, 02 Mar 2011 00:00:36 -0000 On 1 Mar 2011, at 23:49, Mark Blackman wrote: >=20 > On 1 Mar 2011, at 23:27, Dr Josef Karthauser wrote: >=20 >> Does it make sense to run zfs on a single disk? >>=20 >> I'm setting up a FreeBSD host over at a Xen provider, with a single = 80GB disk image. Ideally I'd like to run ZFS on this system, for = snapshot and flexible creation of filesystems and quotas. Has anyone got = any recommendations for me in this regard? Am I crazy? >=20 > Not crazy, I do this as well, all the time just to get the management = capabilities and > leave hardware RAID to manage the availability. >=20 > - Mark Any idea what the performance implications are? Can I get away without a = ZIL or ARC and still get a decent performance? Joe=