root@ubuntu:~# cat /proc/mdstat 
Personalities : [raid6] [raid5] [raid4] 
md2 : active raid5 sda1[0] sdf3[2] sde3[1]
      10472448 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/3] [UUU]
      	resync=DELAYED
      
md1 : active raid5 sdb2[0] sdf2[4] sde2[3] sdd2[2] sdc2[1]
      62486528 blocks super 1.2 level 5, 512k chunk, algorithm 2 [5/5] [UUUUU]
      [=====>...............]  resync = 27.4% (4284836/15621632) finish=23.6min speed=7973K/sec
      
md0 : active raid5 sdb1[0] sdf1[4] sde1[3] sdd1[2] sdc1[1]
      382976 blocks super 1.2 level 5, 512k chunk, algorithm 2 [5/5] [UUUUU]
      
unused devices: <none>