From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jacob Madsen Subject: Incative RAID5 (it should be active) Date: Sat, 12 Aug 2006 17:01:57 +0200 Message-ID: <44DDED65.10500@mungo.dk> 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: linux-raid@vger.kernel.org List-Id: linux-raid.ids Hey I only have 4 sata slots in my computer and i have a raid5 array of partitions on those 4 disks. Today i needed a free sata slots, so i unplugged one of the disks and booted with knoppix. I then did some work, turned of the computer and plugged in the disk again. I should say that i didnt use the array while using knoppix, so everything should be intact. I then expected to be able to hotadd the missing partition and use the array as usual. But its inactive: # mdadm --detail /dev/md8 mdadm: md device /dev/md8 does not appear to be active. # cat /proc/mdstat md8 : inactive sda10[1] sdd10[4] sdc10[3] sdb10[2] 545791744 blocks I then stopped the array: # mdadm -S /dev/md8 mdadm: stopped /dev/md8 And tryed to assemble it: # mdadm --verbose --assemble /dev/md8 /dev/sda10 /dev/sdb10 /dev/sdc10 /dev/sdd10 mdadm: looking for devices for /dev/md8 mdadm: /dev/sda10 is identified as a member of /dev/md8, slot 1. mdadm: /dev/sdb10 is identified as a member of /dev/md8, slot 2. mdadm: /dev/sdc10 is identified as a member of /dev/md8, slot 3. mdadm: /dev/sdd10 is identified as a member of /dev/md8, slot 4. mdadm: no uptodate device for slot 0 of /dev/md8 mdadm: added /dev/sdb10 to /dev/md8 as 2 mdadm: added /dev/sdc10 to /dev/md8 as 3 mdadm: added /dev/sdd10 to /dev/md8 as 4 mdadm: added /dev/sda10 to /dev/md8 as 1 mdadm: /dev/md8 assembled from 2 drives and 1 spare - not enough to start the array. The last line indicate something is wrong, but i have no idea what to do. (i still expect all the data to be intact) Any good ideas will be appreciated alot! /Jacob