HowTo Check Software Raid Status with Mdstat

[root@dc1 /]# cat /proc/mdstat
Personalities : [raid1] 
md0 : active raid1 sda2[0] sdb2[1]
      204736 blocks super 1.0 [2/2] [UU]
      
md5 : active raid1 sdb8[1] sda8[0]
      901087040 blocks super 1.1 [2/2] [UU]
      [=======>.............]  check = 37.4% (337859904/901087040) finish=132.8min speed=70676K/sec
      bitmap: 3/7 pages [12KB], 65536KB chunk

md4 : active raid1 sdb7[1] sda7[0]
      2096064 blocks super 1.1 [2/2] [UU]
      	resync=DELAYED
      bitmap: 1/1 pages [4KB], 65536KB chunk

md2 : active raid1 sdb1[1] sda1[0]
      20955008 blocks super 1.1 [2/2] [UU]
      	resync=DELAYED
      bitmap: 0/1 pages [0KB], 65536KB chunk

md1 : active raid1 sdb5[1] sda5[0]
      41910144 blocks super 1.1 [2/2] [UU]
      	resync=DELAYED
      bitmap: 1/1 pages [4KB], 65536KB chunk

md3 : active raid1 sdb6[1] sda6[0]
      2096064 blocks super 1.1 [2/2] [UU]
      	resync=DELAYED
      bitmap: 0/1 pages [0KB], 65536KB chunk

unused devices: <none>

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