From mboxrd@z Thu Jan 1 00:00:00 1970 From: GarBoge Subject: filesystem on mdadm raid from unpartioned block devices Date: Wed, 12 Jan 2011 15:31:37 -0700 Message-ID: <1294871497.16201.9.camel@TRAVLOR> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org Cc: neilb@suse.de List-Id: linux-raid.ids A quick question that I haven't been able to find and answer for. I have been using whole block devices (whole unpartitioned hard drives) in various raid 1 and 5 setups using mdadm 3.1.4 with pretty mundane options (default options such as striping and but using metadata 1.2). Typically I use mkfs.ext4 with no options (default) to install the filesystem. Is there an issue with alignment on the newer 4096-byte drives. If so what would be the proper approach? I thank you for your time. Ashley