From mboxrd@z Thu Jan 1 00:00:00 1970 From: Simon Matthews Subject: Adding disks with raid to existing raid system. Date: Sun, 14 Mar 2010 22:23:46 -0800 Message-ID: <40b437201003142323g7b0f4e48wb9d58b963f12e988@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids I have just built a system and have it booting off a software raid partition. The raid sets use devices /dev/md0, /dev/hd1, /dev/md2, /dev/md3. I now need to transfer some additional disks to this system. These disks are presently in another system where they host a number of raid sets, currently also /dev/md0 - /dev/md4. I need to ensure that the data on the raid set that I am adding to the system is not lost. However, clearly, I can't have the raid sets on these disks come up as /dev/md0-md4. How do I ensure this and have these raid sets come up on /dev/md5 and higher? Simon