Editing Raid (section)

== Uitbreiden van de array ==
Het uitbreiden van de array gaat door eerst spares toe te voegen en daarna de array met de spares uit te breiden
<pre>
root@host:~# mdadm -a /dev/md0 /dev/sdc3 /dev/sdd3
root@host:~# mdadm -a /dev/md1 /dev/sdc4 /dev/sdd4
root@host:~# mdadm --grow --raid-devices=4 /dev/md0
root@host:~# mdadm --grow --raid-devices=4 /dev/md1
</pre>
Volg het proces met
 watch cat /proc/mdstat 
Aan het einde van het proces laat de array de nieuwe omvang zien met
<pre>
root@host:~# mdadm --detail /dev/md0
/dev/md0:
     Array Size : 37722624 (35.98 GiB 38.63 GB)
  Used Dev Size : 12574208 (11.99 GiB 12.88 GB)
   Raid Devices : 4
    Number   Major   Minor   RaidDevice State
       0       8        3        0      active sync   /dev/sda3
       2       8       19        1      active sync   /dev/sdb3
       3       8       35        2      active sync   /dev/sdc3
       4       8       51        3      active sync   /dev/sdd3
root@host:~# mdadm --detail /dev/md1
/dev/md1:
     Array Size : 668891136 (637.90 GiB 684.94 GB)
  Used Dev Size : 222963712 (212.63 GiB 228.31 GB)
   Raid Devices : 4
    Number   Major   Minor   RaidDevice State
       0       8        4        0      active sync   /dev/sda4
       2       8       20        1      active sync   /dev/sdb4
       3       8       36        2      active sync   /dev/sdc4
       4       8       52        3      active sync   /dev/sdd4
</pre>
Of met:
<pre>
root@host:~# array-info -a -d /dev/md0
MD Linux driver
Version 1.2.3
Creation time   : Sat Apr  2 17:19:25 2557

Fault tolerance : RAID 5
Array Size      : 35.98 GiB
Status          : Logical drive is ok
Devices         : 4
        Size    : 11.99 GiB
        Raid    : 4
        Active  : 4
        Working : 4
        Failed  : 0
        Spare   : 0
  RaidDevice   State
           0   active synchronized 
          -1   removed 
           1   active synchronized 
           2   active synchronized 
root@host:/etc/mdadm# array-info -a -d /dev/md1
MD Linux driver
Version 1.2.3
Creation time   : Sat Apr  2 17:20:06 2557

Fault tolerance : RAID 5
Array Size      : 637.90 GiB
Status          : Logical drive is ok
Devices         : 4
        Size    : 212.63 GiB
        Raid    : 4
        Active  : 4
        Working : 4
        Failed  : 0
        Spare   : 0
  RaidDevice   State
           0   active synchronized 
          -1   removed 
           1   active synchronized 
           3   active synchronized 
root@host:/etc/mdadm#
</pre>