From mboxrd@z Thu Jan 1 00:00:00 1970 From: "kedacomkernel" Subject: question about raid10 near copy info in man mdadm. Date: Mon, 16 Apr 2012 13:28:14 +0800 Message-ID: <201204161328097657740@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: Neil Brown Cc: linux-raid List-Id: linux-raid.ids Hi: I readed the information about raid10 near copy in man mdadm. It is: 'n' signals 'near' copies. Multiple copies of one data block are at similar offsets in different devices. But I think this wrong. If raid10 had five disks and near copy is equal three. The layout like: 5 disks -------------------- A1 A1 A1 A2 A2 A2 A3 A3 A3 A4 But the copies of datablock A2 are not at similar offset in different device. -------------- kedacomkernel 2012-04-16