tests/02r6grow

   1
   2
   3 # create a small raid6 array, make it larger.  Then make it smaller
   4
   5 mdadm -CR $md0 --level raid6 --chunk=32 --raid-disks 4 --size $[size/2] $dev1 $dev2 $dev3 $dev4
   6 check wait
   7 check state UUUU
   8 testdev $md0 2 $[size/2] 32
   9
  10 mdadm --grow $md0 --size max
  11 check resync
  12 check wait
  13 testdev $md0 2 $mdsize0 64
  14
  15 mdadm --grow $md0 --size $[size/2]
  16 check nosync
  17 testdev $md0 2 $[size/2] 64
  18
  19 mdadm -S $md0
  20
  21 # same again with version 1.1 superblock
  22 mdadm -CR $md0 --level raid6 --metadata=1.1 --chunk=128 --raid-disks 4 --size $[size/2] $dev1 $dev2 $dev3 $dev4
  23 check wait
  24 check state UUUU
  25 testdev $md0 2 $[size/2] 128
  26
  27 mdadm --grow $md0 --size max
  28 check resync
  29 check wait
  30 testdev $md0 2 $[size-4] 128
  31
  32 mdadm --grow $md0 --size $[size/2]
  33 check nosync
  34 testdev $md0 2 $[size/2] 128
  35
  36 mdadm -S $md0