From owner-freebsd-current@FreeBSD.ORG Thu May 24 19:58:49 2012 Return-Path: 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 D227B106564A; Thu, 24 May 2012 19:58:49 +0000 (UTC) (envelope-from matthew@FreeBSD.org) Received: from smtp.infracaninophile.co.uk (smtp6.infracaninophile.co.uk [IPv6:2001:8b0:151:1:3cd3:cd67:fafa:3d78]) by mx1.freebsd.org (Postfix) with ESMTP id 33BCF8FC17; Thu, 24 May 2012 19:58:49 +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 (8.14.5/8.14.5) with ESMTP id q4OJwcLn049545 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Thu, 24 May 2012 20:58:40 +0100 (BST) (envelope-from matthew@FreeBSD.org) X-DKIM: OpenDKIM Filter v2.5.2 smtp.infracaninophile.co.uk q4OJwcLn049545 Authentication-Results: smtp.infracaninophile.co.uk/q4OJwcLn049545; dkim=none (no signature); dkim-adsp=none Message-ID: <4FBE92EE.4070102@FreeBSD.org> Date: Thu, 24 May 2012 21:58:38 +0200 From: Matthew Seaman User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:12.0) Gecko/20120428 Thunderbird/12.0.1 MIME-Version: 1.0 To: Mark Linimon References: <38A5BC8F-A8FB-4371-AB1D-9548F5957254@lists.zabbadoz.net> <20120523131046.GC2358@deviant.kiev.zoral.com.ua> <12410676034.20120524013853@serebryakov.spb.ru> <8D72700F5CA4461BAD1C98908689CB9E@multiplay.co.uk> <20120523220533.GA11122@lonesome.com> In-Reply-To: <20120523220533.GA11122@lonesome.com> X-Enigmail-Version: 1.4.1 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig4B1B4E8EC067CFA6D2763DAB" X-Virus-Scanned: clamav-milter 0.97.4 at lucid-nonsense.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on lucid-nonsense.infracaninophile.co.uk Cc: lev@FreeBSD.org, Kirk McKusick , freebsd-current FreeBSD , Steven Hartland , Konstantin Belousov , "Bjoern A. Zeeb" Subject: Re: UFS+J panics on HEAD 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: Thu, 24 May 2012 19:58:49 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig4B1B4E8EC067CFA6D2763DAB Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 24/05/2012 00:05, Mark Linimon wrote: > On Wed, May 23, 2012 at 10:58:48PM +0100, Steven Hartland wrote: >> > While it might be a shame to see FFS go by the wayside are there any= >> > big reasons why you would rather stick with FFS instead of moving >> > to ZFS with all the benefits that brings? > - ZFS eats bytes for breakfast. It is completely inappropriate > for anything with less than 4GB RAM. >=20 > - ZFS performs poorly under disk-nearly-full conditions. - ZFS is not optimal for situations where there are a lot of small, randomly dispersed IOs around the disk space. Like in any sort of RDBMS. Even so, ZFS is certainly my personal default nowadays. On a machine of any size, the question is not "should I use ZFS?" but "are there any good reasons why I shouldn't use ZFS? (And if so, what could I do to make it possible to use ZFS anyhow...)" With Andriy's recent patches to zfboot to extend support for Boot Environments, it's all starting to look particularly sexy. Cheers, Matthew --=20 Dr Matthew J Seaman MA, D.Phil. PGP: http://www.infracaninophile.co.uk/pgpkey --------------enig4B1B4E8EC067CFA6D2763DAB 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/ iEYEARECAAYFAk++ku4ACgkQ8Mjk52CukIypiQCfcvWklgqHgINkuRUeHR74txWw cBMAn0LBfh8Ql5ynvMjPUMkNx3QXtSEJ =ISa3 -----END PGP SIGNATURE----- --------------enig4B1B4E8EC067CFA6D2763DAB--