From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joseba Ibarra Subject: Can't mount /dev/md0 Raid5 Date: Wed, 11 Oct 2017 12:25:14 +0200 Message-ID: <59DDF18A.9060800@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: list linux-raid List-Id: linux-raid.ids The md0 is ext4 formated. But now, I can even start the SO when all the disk are pluged. One of them is corrupt. It makes an odd sound at the starting. However if I unplug that disk the system start fine, however no RAID is detected and after assemble it says: root@grafico:/home/jose# mdadm --detail /dev/md0 /dev/md0: Version : 1.2 Creation Time : Sat Aug 5 23:10:50 2017 Raid Level : raid5 Used Dev Size : 976629760 (931.39 GiB 1000.07 GB) Raid Devices : 4 Total Devices : 3 Persistence : Superblock is persistent Update Time : Thu Sep 21 13:34:35 2017 State : active, degraded, Not Started Active Devices : 3 Working Devices : 3 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 512K Name : servidor:0 UUID : 0b44a3b8:83eafabc:644afc87:bdb5b1f3 Events : 3109 Number Major Minor RaidDevice State - 0 0 0 removed 1 8 17 1 active sync /dev/sdb1 2 8 33 2 active sync /dev/sdc1 3 8 49 3 active sync /dev/sdd1 I'm not sure how to continue, since i don't see the RAID. GParted see the disks, however doesn't see the md0 and I'm bit scared if I lost the data content. Joseba Ibarra