From owner-freebsd-questions@FreeBSD.ORG Thu Oct 10 17:56:17 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 6D151CAC for ; Thu, 10 Oct 2013 17:56:17 +0000 (UTC) (envelope-from aurfalien@gmail.com) Received: from mail-pd0-x231.google.com (mail-pd0-x231.google.com [IPv6:2607:f8b0:400e:c02::231]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 465A82F69 for ; Thu, 10 Oct 2013 17:56:17 +0000 (UTC) Received: by mail-pd0-f177.google.com with SMTP id y10so2999144pdj.22 for ; Thu, 10 Oct 2013 10:56:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:content-type:subject:date:message-id:to:mime-version; bh=+zz13j7h7Fij/szLrrJwTs/V3XlgHYVM8cuqhAfFp7c=; b=bxDjgnXXu/zME7e1zAPVYEb9BDfXBRwF1a5lwBk5pOGs00gbma2U8qD3ABrpwPEr35 2K15GkLovlz42GPCRnPMieGmcEZPvvEWTk9qT6fUPWIu2xwN28/3GmBwwJT+T39lY5Ue 9IUhBzh+XdJigUvpLw0E3QSh8icLUre07kLyYOvrVpHjpBLR7Eev26khSRIdS7QKrKt7 BrOJWvuwfQbszZSViRN9meW6+P0X5ufqGDIwldQjmwyr2xOy6GTNNIUEJjpY4fnzM/I3 mbFlbFEAxgtMi8nslOhkaJHQ9hBaSAcU8P8fiuGdv57r319Fso39bNTUfJtcsgCB8rs6 6s2w== X-Received: by 10.66.122.40 with SMTP id lp8mr16829040pab.82.1381427776883; Thu, 10 Oct 2013 10:56:16 -0700 (PDT) Received: from briankrusicw.logan.tv ([64.17.255.138]) by mx.google.com with ESMTPSA id py4sm54531803pbb.33.1969.12.31.16.00.00 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 10 Oct 2013 10:56:16 -0700 (PDT) From: aurfalien Subject: 4K vs 512byte sector drives on Seagate Constellation E.2 Date: Thu, 10 Oct 2013 10:56:10 -0700 Message-Id: To: FreeBSD Questions Mailing List Mime-Version: 1.0 (Apple Message framework v1085) X-Mailer: Apple Mail (2.1085) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.14 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Oct 2013 17:56:17 -0000 Hi, I've a Seagate constellation ES.2 which supports 4K sectors but diskinfo = shows it as 512bytes; da0 512 3000592982016 5860533168 0 0 364801 = 255 63 I understand that Seagate ships these drives to be compatible with = 512byte sectors so that older Windows OSs work on the. But I'm unsure how to get this drive to report as having 4K sectors. I'm really asking from a ZFS perspective as my vdevs show with an ashift = of 9 via the zdb command. I'd rather forgo the gnop hack as I prefer a cleaner approach. Any info or insight would be greatly appreciated. - aurf =20