From owner-freebsd-stable@FreeBSD.ORG Fri Mar 8 09:43:20 2013 Return-Path: Delivered-To: freebsd-stable@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 0FF71AF6; Fri, 8 Mar 2013 09:43:20 +0000 (UTC) (envelope-from borjam@sarenet.es) Received: from proxypop04.sare.net (proxypop04.sare.net [194.30.0.65]) by mx1.freebsd.org (Postfix) with ESMTP id C294A686; Fri, 8 Mar 2013 09:43:19 +0000 (UTC) Received: from [172.16.1.163] (izaro.sarenet.es [192.148.167.11]) by proxypop04.sare.net (Postfix) with ESMTPSA id A0DC79DEB44; Fri, 8 Mar 2013 10:33:18 +0100 (CET) Subject: Re: ZFS "stalls" -- and maybe we should be talking about defaults? Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: text/plain; charset=us-ascii From: Borja Marcos In-Reply-To: <20130305220936.GA54718@icarus.home.lan> Date: Fri, 8 Mar 2013 10:33:17 +0100 Content-Transfer-Encoding: quoted-printable Message-Id: <9884DCE0-9FAF-4A49-B230-3596E10C456D@sarenet.es> References: <513524B2.6020600@denninger.net> <89680320E0FA4C0A99D522EA2037CE6E@multiplay.co.uk> <20130305050539.GA52821@anubis.morrow.me.uk> <20130305053249.GA38107@icarus.home.lan> <5135D275.3050500@FreeBSD.org> <20130305220936.GA54718@icarus.home.lan> To: Jeremy Chadwick X-Mailer: Apple Mail (2.1085) Cc: freebsd-stable@FreeBSD.org, Andriy Gapon X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 08 Mar 2013 09:43:20 -0000 On Mar 5, 2013, at 11:09 PM, Jeremy Chadwick wrote: >>> - Disks are GPT and are *partitioned, and ZFS refers to the = partitions >>> not the raw disk -- this matters (honest, it really does; the ZFS >>> code handles things differently with raw disks) >>=20 >> Not on FreeBSD as far I can see. >=20 > My statement comes from here (first line in particular): >=20 > = http://lists.freebsd.org/pipermail/freebsd-questions/2013-January/248697.h= tml >=20 > If this is wrong/false, then this furthers my point about kernel folks > who are in-the-know needing to chime in and help stop the > misinformation. The rest of us are just end-users, often misinformed. As far as I know, this is lore than surfaces periodically in the lists. = It was true in Solaris (at least in the past). But unless I'm terribly wrong, this doesn't happen in FreeBSD. ZFS sees = "disks", and they can be a whole raw device or a partition/slice, even a gnop device. No difference. That's why I mentioned in freebsd-fs that we badly need an official = doctrine, carefully curated, and written in holy letters ;) Borja.