From owner-freebsd-stable@FreeBSD.ORG Mon Jun 15 08:39:42 2009 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 F39D110656D3 for ; Mon, 15 Jun 2009 08:39:41 +0000 (UTC) (envelope-from dan.naumov@gmail.com) Received: from yw-out-2324.google.com (yw-out-2324.google.com [74.125.46.28]) by mx1.freebsd.org (Postfix) with ESMTP id ABD8C8FC1B for ; Mon, 15 Jun 2009 08:39:41 +0000 (UTC) (envelope-from dan.naumov@gmail.com) Received: by yw-out-2324.google.com with SMTP id 9so1918825ywe.13 for ; Mon, 15 Jun 2009 01:39:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=o+GpkPlVJa0E2UL8WlDHaZfyE8qXvi6jL5Jlezl/Mms=; b=WZpRDVpEbSKLZ5N0d7TwbVwd9ADzDq1O+lckz0r166OYe3Hf2lIGY3cWghLCboIvqT 3J3OltASJpwwOq0+PKrrmiOenCmJ4L3NWQ0gq6/cM1gpumnUTIt4jKkgjHtHofRwBf6U qPpawcygH8acBgbe4PRj1lNjaKSH1CoEhf1dg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=TIO+ClkzkLZI7rIpL9NZ3qtIwd9N1LmAiDscJfHZBKf5wrC0y3GbeFmzu0zFyO40lv spT033zrxjvDK9GcfFLoDR0b/oO7nDOc9BdsKBgkOI0xnBcHhm1vjqUu4oKEwsaOXnfw V41QUvrVxrkKqQQ7JHvwggNzOCduS9F4vsuGk= MIME-Version: 1.0 Received: by 10.100.127.4 with SMTP id z4mr8334854anc.129.1245055180924; Mon, 15 Jun 2009 01:39:40 -0700 (PDT) In-Reply-To: References: Date: Mon, 15 Jun 2009 11:39:40 +0300 Message-ID: From: Dan Naumov To: Pete French Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-stable@freebsd.org Subject: Re: Does this disk/filesystem layout look sane to you? 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: Mon, 15 Jun 2009 08:39:42 -0000 Haven't had time to test (stuck at work), but I will trust your word :) Well, this sounds nice and sensible. I am curious though if there have been any numbers regarding how much do "actual" drive sizes vary in the real world when it comes to disks of same manufacturer/model/size. I guess this probably varies from manufacturer to manufacturer, but some average estimates would be nice, just so that one could evaluate whether this 64k barrier is enough. - Dan Naumov On Mon, Jun 15, 2009 at 11:35 AM, Pete French wrote: >> If this is true, some magic has been done to the FreeBSD port of ZFS, >> because according to SUN documentation is is definitely not supposed >> to be possible. > > I just tried it again to make sure I wasn't imagining things - you > can give it a shot yourself using mdconfig to create some drives. It > will let me drop in a replacement up to about 64k smaller than the original > with no problems. Below that and it refuses saying the drive is too > small. > > -pete. >