かたづけ終わったヽ(´ー｀)ノ
raid1のrebuild状態はこんな感じ
当たり前だけどonline状態でrebuildできるので
yukon.servegame.comも起動してます

md0 : active raid1 sda1[0] sdb1[1]
      104320 blocks [2/2] [UU]

md1 : active raid1 sdb2[2] sda2[0]
      97667072 blocks [2/1] [U_]
      [===========>.........]  recovery = 58.6% (57249856/97667072) finish=13.3min speed=50491K/sec

md2 : active raid1 sdb3[2] sda3[0]
      388660480 blocks [2/1] [U_]
        resync=DELAYED