From owner-freebsd-fs@FreeBSD.ORG Thu Oct 13 16:21:38 2011 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 90E0D106566C for ; Thu, 13 Oct 2011 16:21:38 +0000 (UTC) (envelope-from tevans.uk@googlemail.com) Received: from mail-vx0-f182.google.com (mail-vx0-f182.google.com [209.85.220.182]) by mx1.freebsd.org (Postfix) with ESMTP id 437908FC08 for ; Thu, 13 Oct 2011 16:21:37 +0000 (UTC) Received: by vcbf13 with SMTP id f13so283864vcb.13 for ; Thu, 13 Oct 2011 09:21:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=Tr2baO8MaXUyZVPmDcJWgnEt2ciW/MDdKl0SlRYWOYI=; b=Gx9DTe8cBvM8LYDZu98WLgaZA2nXq4XYCSUEI9eTM5yBwNz0KMY2cHwhH+q0Ew+34C w8+TggKX75UMrKbDFdRUhmbhwV05Zq5ymRRy4EJIh28Km2Y5e3zPTL3a8CfrDCM9hFnr rNGOk9tMyZEzBz+rsBBLXcYpJWHzB4jEs26EI= MIME-Version: 1.0 Received: by 10.52.72.9 with SMTP id z9mr4493099vdu.70.1318522897477; Thu, 13 Oct 2011 09:21:37 -0700 (PDT) Received: by 10.52.111.201 with HTTP; Thu, 13 Oct 2011 09:21:37 -0700 (PDT) In-Reply-To: References: <4E95AE08.7030105@lerctr.org> Date: Thu, 13 Oct 2011 17:21:37 +0100 Message-ID: From: Tom Evans To: Larry Rosenman Content-Type: text/plain; charset=UTF-8 Cc: freebsd-fs@freebsd.org, Johannes Totz Subject: Re: AF (4096 byte sector) drives: Can you mix/match in a ZFS pool? 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: Thu, 13 Oct 2011 16:21:38 -0000 On Thu, Oct 13, 2011 at 3:27 PM, Larry Rosenman wrote: > I think something(tm) should be put in the handbook about this. TBH I think that ZFS should just move it's default ashift to 11 and have 4k blocks by default. Saves all this messing around with temporary gnop devices. Documentation that says (in effect) "if you do it the default way with most common hard drives these days performance sucks, so follow this convoluted work around" is not that useful - a lot of people will only come across it when their performance sucks and be disappointed. Cheers Tom