From owner-freebsd-fs@FreeBSD.ORG Fri May 18 11:19:31 2007 Return-Path: X-Original-To: freebsd-fs@freebsd.org Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 4A56316A401; Fri, 18 May 2007 11:19:31 +0000 (UTC) (envelope-from des@des.no) Received: from tim.des.no (tim.des.no [194.63.250.121]) by mx1.freebsd.org (Postfix) with ESMTP id CA8B713C43E; Fri, 18 May 2007 11:19:25 +0000 (UTC) (envelope-from des@des.no) Received: from tim.des.no (localhost [127.0.0.1]) by spam.des.no (Postfix) with ESMTP id D9D722086; Fri, 18 May 2007 13:19:21 +0200 (CEST) X-Spam-Tests: AWL X-Spam-Learn: disabled X-Spam-Score: 0.0/3.0 X-Spam-Checker-Version: SpamAssassin 3.1.7 (2006-10-05) on tim.des.no Received: from dwp.des.no (des.no [80.203.243.180]) by smtp.des.no (Postfix) with ESMTP id 56A702083; Fri, 18 May 2007 13:19:21 +0200 (CEST) Received: by dwp.des.no (Postfix, from userid 1001) id 3E05456C1; Fri, 18 May 2007 13:19:21 +0200 (CEST) From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= To: Darren Reed References: <20070409011723.GB74547@garage.freebsd.pl> <20070409094319.GB76673@garage.freebsd.pl> <70e8236f0704090808y5d305175wdc3cee5be1a26a9@mail.gmail.com> <20070409153338.GH76673@garage.freebsd.pl> <440b3e930705131031v5e97db7fq486d8d17aeb9f622@mail.gmail.com> <20070514070715.GA82322@hub.freebsd.org> <86646vyimg.fsf@dwp.des.no> <20070517124648.GA98052@hub.freebsd.org> <86lkfntndt.fsf@dwp.des.no> <20070518103230.GA50946@hub.freebsd.org> Date: Fri, 18 May 2007 13:19:21 +0200 In-Reply-To: <20070518103230.GA50946@hub.freebsd.org> (Darren Reed's message of "Fri\, 18 May 2007 10\:32\:30 +0000") Message-ID: <86tzuav0p2.fsf@dwp.des.no> User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/21.3 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Cc: freebsd-fs@freebsd.org, freebsd-current@freebsd.org, Pawel Jakub Dawidek , Joao Barros Subject: Re: ZFS: amd64, devd, root file system. 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: Fri, 18 May 2007 11:19:31 -0000 Darren Reed writes: > Dag-Erling Sm=C3=B8rgrav writes: > > My point is that it is a lot more difficult for us to implement ZFS > > support in an OS that is intended to run on everything and the kitchen > > sink, from the crappiest 486 to the latest quad-core Xeon, with all > > kinds of crappy disk controllers, than it is for Sun to do the same in > > Solaris, which mostly runs on hardware designed and manufactured by Sun > > for the specific purpose of running Solaris. > > Which is why I'm using FreeBSD+ZFS rather than Solaris+ZFS :-) > > Maybe more layers are required in FreeBSD disk I/O subsystem to > shield things like ZFS from crappy controllers? You completely misunderstand - the issue is not shielding ZFS from the crappy controllers - that is already taken care of - but having to reimplement the entire stack in the BTX loader, and in boot2 (which needs to be able to locate and load the BTX loader). DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no