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Old 11-13-2010, 11:56 AM   #1
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Registered: Nov 2010
Location: Berlin
Distribution: Red Hat Enterprise Linux 6
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Red Hat Enterprise Linux 6 Client Raid config with mdadm


I have install Red Hat Enterprise Linux 6 Client yesterday. The first thing I have received is, that on the install-process with anaconda the raid-configuration-assistant crashes...3 times. So, I choose raid-configuration later and install RHEL6-Client.

Ok, after the reboot I configured software-raid with mdadm, and add later a spare device. I have wrote this into my mdadm.conf.

After reboot, the spare device is not listet with:

mdadm --detail /dev/md0

        Version : 1.2
  Creation Time : Fri Nov 12 12:26:06 2010
     Raid Level : raid5
     Array Size : 488391680 (465.77 GiB 500.11 GB)
  Used Dev Size : 244195840 (232.88 GiB 250.06 GB)
   Raid Devices : 3
  Total Devices : 3
    Persistence : Superblock is persistent

    Update Time : Sat Nov 13 18:36:51 2010
          State : clean
 Active Devices : 3
Working Devices : 3
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 512K

           Name : yourmum.homeunix:0  (local to host yourmum.homeunix)
           UUID : c3564e56:d448ad99:9e6e7d3c:3a8536e3
         Events : 37

    Number   Major   Minor   RaidDevice State
       0       8       33        0      active sync   /dev/sdc1
       1       8       49        1      active sync   /dev/sdd1
       3       8       65        2      active sync   /dev/sde1

ARRAY /dev/md/yourmum.homeunix:0 level=raid5 num-devices=4 metadata=1.2 spares=1 name=yourmum.homeunix:0 UUID=c3564e56:d448ad99:9e6e7d3c:3a8536e3
/dev/sdf1 is my spare device....

What is the problem with the spare??? I have rebuild and test this 4 times, nothing change...


Old 11-14-2010, 04:46 AM   #2
Registered: Nov 2008
Location: Lower Saxony, Germany
Distribution: CentOS, RHEL, Solaris 10, AIX, HP-UX
Posts: 731

Rep: Reputation: 137Reputation: 137

it looks like the spare disk was not correctly added to the raid. What version of mdadm you are using?
Old 11-14-2010, 11:54 AM   #3
LQ Newbie
Registered: Nov 2010
Location: Berlin
Distribution: Red Hat Enterprise Linux 6
Posts: 4

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you see it on the output...


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