From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Muratet Subject: Converting RAID5 to RAID0 Date: Sun, 31 Aug 2014 12:43:26 +0000 (UTC) Message-ID: 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: linux-raid@vger.kernel.org List-Id: linux-raid.ids I am doing some experiments with mdadm to combine two 1TB disks into a RAID array. I used fdisk to create the partitions and mdadm to create a two disk RAID5 array. I would like to have more space and I can live without redundancy. I searched the man pages and boards for a way to do that and found: $ sudo mdadm /dev/md0 -f /dev/sdd mdadm: set /dev/sdd faulty in /dev/md0 $ sudo mdadm /dev/md0 -r /dev/sdd mdadm: hot removed /dev/sdd from /dev/md0 $ sudo echo raid0 > /sys/block/md0/md/level -bash: /sys/block/md0/md/level: Permission denied which was not the result I expected. Is it possible to convert RAID5 to RAID0? There are no data on the disk. Is there a way to start over? Cheers Mike