md1 : active raid10 sdd2[2] sdc2[0] sda2[1]
      955985920 blocks super 1.2 512K chunks 2 near-copies [4/3] [UUU_]
      bitmap: 3/8 pages [12KB], 65536KB chunk

md2 : active (auto-read-only) raid10 sdb3[3] sdd3[2] sdc3[0] sda3[1]
      19525632 blocks super 1.2 512K chunks 2 near-copies [4/4] [UUUU]
        resync=PENDING

md0 : active raid10 sdd1[2] sdc1[0] sda1[1]
      970752 blocks super 1.2 512K chunks 2 near-copies [4/3] [UUU_]