From owner-freebsd-stable@freebsd.org Fri Feb 12 15:34:04 2016 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 774D3AA67CD for ; Fri, 12 Feb 2016 15:34:04 +0000 (UTC) (envelope-from lausts@acm.org) Received: from cdptpa-oedge-vip.email.rr.com (cdptpa-outbound-snat.email.rr.com [107.14.166.232]) by mx1.freebsd.org (Postfix) with ESMTP id 4359B137D for ; Fri, 12 Feb 2016 15:34:03 +0000 (UTC) (envelope-from lausts@acm.org) Received: from [173.88.10.122] ([173.88.10.122:17495] helo=mail.laus.org) by cdptpa-oedge02 (envelope-from ) (ecelerity 3.5.0.35861 r(Momo-dev:tip)) with ESMTP id 60/43-12379-9AAFDB65; Fri, 12 Feb 2016 15:30:50 +0000 Received: from [192.168.1.100] (laust2 [192.168.1.100]) by mail.laus.org (8.15.2/8.15.2) with ESMTPS id u1CFUlut092101 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Fri, 12 Feb 2016 10:30:49 -0500 (EST) (envelope-from lausts@acm.org) X-Authentication-Warning: mail.laus.org: Host laust2 [192.168.1.100] claimed to be [192.168.1.100] From: "Thomas Laus" Organization: ABB To: freebsd-stable@freebsd.org Date: Fri, 12 Feb 2016 10:30:44 -0500 Subject: Is UEFI required for ZFS? Reply-to: lausts@acm.org Message-ID: <56BDFAA4.17139.1EEE35@lausts.acm.org> Priority: normal X-mailer: Pegasus Mail for Windows (4.70) X-RR-Connecting-IP: 107.14.168.130:25 X-Cloudmark-Score: 0 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.20 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, 12 Feb 2016 15:34:04 -0000 I have a new Asus H170-Plus-D3 motherboard that will be used for a DOM0 Xen Server. It uses an Intel i5-6300 processor and a Samsung 840 EVO SSD. I would like to use ZFS on this new installation. The Xen Kernel does not have UEFI support at this time, so I installed FreeBSD CURRENT r295345 in 'legacy mode'. It takes about 7 minutes to go from the first '|' character to getting the 'beastie' menu. I changed the BIOS to UEFI and did another installation. The boot process goes in an instant. Thinking that it may be an issue with FreeBSD CURRENT, I installed FreeBSD 10.3 BETA 1 in both legacy and UEFI mode. The results were the same. BIOS Legacy mode with a default ZFS installation takes nearly 7 minutes to get the Beastie menu. An UEFI installation with ZFS is instantanious. A default GPT installation of both CURRENT and FreeBSD 10.3 BETA1, either legacy or UEFI, also gives an instant bootup. How can I dig deeper into my problem? I would like to use ZFS with my Xen Server. Tom -- Public Keys: PGP KeyID = 0x5F22FDC1 GnuPG KeyID = 0x620836CF