From owner-freebsd-stable@FreeBSD.ORG Thu Dec 30 14:07:46 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9C7FA1065670 for ; Thu, 30 Dec 2010 14:07:46 +0000 (UTC) (envelope-from m.seaman@infracaninophile.co.uk) Received: from smtp.infracaninophile.co.uk (smtp6.infracaninophile.co.uk [IPv6:2001:8b0:151:1:3fd3:cd67:fafa:3d78]) by mx1.freebsd.org (Postfix) with ESMTP id F22DF8FC12 for ; Thu, 30 Dec 2010 14:07:45 +0000 (UTC) Received: from seedling.black-earth.co.uk (seedling.black-earth.co.uk [81.187.76.163]) (authenticated bits=0) by smtp.infracaninophile.co.uk (8.14.4/8.14.4) with ESMTP id oBUE7eid030151 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Thu, 30 Dec 2010 14:07:41 GMT (envelope-from m.seaman@infracaninophile.co.uk) X-DKIM: Sendmail DKIM Filter v2.8.3 smtp.infracaninophile.co.uk oBUE7eid030151 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=infracaninophile.co.uk; s=201001-infracaninophile; t=1293718061; bh=/6W6jjYdUqwrkssohou3NWlgKsx7BJ08hlEAO3jNMZk=; h=Message-ID:Date:From:MIME-Version:To:CC:Subject:References: In-Reply-To:Content-Type:Cc:Content-Type:Date:From:In-Reply-To: Message-ID:Mime-Version:References:To; z=Message-ID:=20<4D1C9224.1010909@infracaninophile.co.uk>|Date:=20T hu,=2030=20Dec=202010=2014:07:32=20+0000|From:=20Matthew=20Seaman= 20|User-Agent:=20Mozilla/5.0=20(M acintosh=3B=20U=3B=20Intel=20Mac=20OS=20X=2010.6=3B=20en-US=3B=20r v:1.9.2.13)=20Gecko/20101207=20Thunderbird/3.1.7|MIME-Version:=201 .0|To:=20Dan=20Langille=20|CC:=20freebsd-stable@ freebsd.org|Subject:=20Re:=20slow=20ZFS=20on=20FreeBSD=208.1|Refer ences:=20=09<4D1AF388.3080107@infracaninophile.co.uk>=09=09<4D1B7431.70708 08@infracaninophile.co.uk>=09<4D1BD8D0.5010402@langille.org>=20<4D 1C4A2D.4020206@infracaninophile.co.uk>=20<4D1C7929.3040809@langill e.org>|In-Reply-To:=20<4D1C7929.3040809@langille.org>|X-Enigmail-V ersion:=201.1.1|OpenPGP:=20id=3D60AE908C|Content-Type:=20multipart /signed=3B=20micalg=3Dpgp-sha1=3B=0D=0A=20protocol=3D"application/ pgp-signature"=3B=0D=0A=20boundary=3D"------------enigE1EC705E6F6A 55CEFBB40C35"; b=qCmRCImocrL9EGyoN+WaRypumDUj8kQEC3Y8VVqXqjcrP5MWvX5vH1Tho+t0jWQm8 mj5KdK8z936/csVNuQrK5h4SCPp+/JrEgcBedmMv7vQJ43JztW74Yixy0iOySUS22g q74tG6nSqzygfxPKiEqgwVsAj3a8LaCRgQ/8pRO8= Message-ID: <4D1C9224.1010909@infracaninophile.co.uk> Date: Thu, 30 Dec 2010 14:07:32 +0000 From: Matthew Seaman User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.13) Gecko/20101207 Thunderbird/3.1.7 MIME-Version: 1.0 To: Dan Langille References: <4D1AF388.3080107@infracaninophile.co.uk> <4D1B7431.7070808@infracaninophile.co.uk> <4D1BD8D0.5010402@langille.org> <4D1C4A2D.4020206@infracaninophile.co.uk> <4D1C7929.3040809@langille.org> In-Reply-To: <4D1C7929.3040809@langille.org> X-Enigmail-Version: 1.1.1 OpenPGP: id=60AE908C Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigE1EC705E6F6A55CEFBB40C35" X-Virus-Scanned: clamav-milter 0.96.5 at lucid-nonsense.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,SPF_FAIL autolearn=no version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on lucid-nonsense.infracaninophile.co.uk Cc: freebsd-stable@freebsd.org Subject: Re: slow ZFS on FreeBSD 8.1 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 Dec 2010 14:07:46 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigE1EC705E6F6A55CEFBB40C35 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 30/12/2010 12:20, Dan Langille wrote: > On 12/30/2010 4:00 AM, Matthew Seaman wrote: >> On 30/12/2010 00:56, Dan Langille wrote: >> Yes, if you're booting from ZFS and you're using gpt to partition the >> disks, as described at http://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/ >> et seq. That's probably the most common way of installing FreeBSD+ZFS = in >> use today. > The reason I've not installed ZFS on root is because of the added > complications. I run the OS on ufs (with gmirror) and my data is on > ZFS. We must be hanging out with different groups. Most of the peopl= e > I know don't have ZFS on root. Hmmm... well, complication is in the eye of the beholder. Installing root on ZFS is more work, certainly. Mostly because sysinstall doesn't support it (but the PC-BSD installer does). Once it is set up, it's no more bother than root on UFS during normal use, and personally I'd say a pure ZFS system is simpler and cleaner than a hybrid UFS/ZFS setup[*]. The whole deal with updating gptzfsloader is a thing you only need to worry about on rare occasions; typically only during version upgrades. Unless you're tracking a dev branch or running experimental code. 8.1-RELEASE has v13. 8.2-RELEASE will have v15. 9.0 and 8.3 will probably have v28 -- it's anybodies' guess after that, given Oracle's actions over OpenSolaris. Cheers, Matthew [*] There's a good argument for a system with root on ZFS and data on UFS, as a DB server -- ZFS is not the best performing filesystem for the sort of small randomly located IOs that RDBMSes generate. --=20 Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate JID: matthew@infracaninophile.co.uk Kent, CT11 9PW --------------enigE1EC705E6F6A55CEFBB40C35 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.16 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk0ckiwACgkQ8Mjk52CukIwusACdG2027WDtEeP110Ct1Pq390+t aqwAn1GC86Y5lxTLWOyHuAOR1E01QsUg =oxsR -----END PGP SIGNATURE----- --------------enigE1EC705E6F6A55CEFBB40C35--