[BlueOnyx:17651] Re: Raid1 issue

[Tom]

> I believe this should do it:
> 
> mdadm --manage /dev/md0 --add /dev/sdb1
> mdadm --manage /dev/md1 --add /dev/sdb2
> 
> At least according to this guide:
> 
> https://www.howtoforge.com/replacing_hard_disks_in_a_raid1_array
> 
I ran mdadm --detail /dev/md0 and mdadm --detail /dev/md1 and get the 
following. They don't match and something is definitely wrong:
---------------------------------------------------------------
[root at ns ~]# mdadm --detail /dev/md1
/dev/md1:
        Version : 1.1
  Creation Time : Wed May 13 03:15:35 2015
     Raid Level : raid1
     Array Size : 243188736 (231.92 GiB 249.03 GB)
  Used Dev Size : 243188736 (231.92 GiB 249.03 GB)
   Raid Devices : 2
  Total Devices : 1
    Persistence : Superblock is persistent

  Intent Bitmap : Internal

    Update Time : Thu May 21 11:41:32 2015
          State : active, degraded
 Active Devices : 1
Working Devices : 1
 Failed Devices : 0
  Spare Devices : 0

           Name : localhost.localdomain:1
           UUID : 30487e41:f4b63b0b:680722e4:407ca64f
         Events : 83362

    Number   Major   Minor   RaidDevice State
       0       0        0        0      removed
       1       8        2        1      active sync   /dev/sda2
---------------------------------------------------------------
[root at ns ~]# mdadm --detail /dev/md0
/dev/md0:
        Version : 1.0
  Creation Time : Wed May 13 03:15:34 2015
     Raid Level : raid1
     Array Size : 819136 (800.07 MiB 838.80 MB)
  Used Dev Size : 819136 (800.07 MiB 838.80 MB)
   Raid Devices : 2
  Total Devices : 3
    Persistence : Superblock is persistent

    Update Time : Thu May 21 06:01:33 2015
          State : clean
 Active Devices : 2
Working Devices : 3
 Failed Devices : 0
  Spare Devices : 1

           Name : localhost.localdomain:0
           UUID : b6b998e5:4e2028ae:fcba581c:9b702bbc
         Events : 73

    Number   Major   Minor   RaidDevice State
       2       8       17        0      active sync   /dev/sdb1
       1       8        1        1      active sync   /dev/sda1

       3       8       18        -      spare   /dev/sdb2
---------------------------------------------------------------