fs.log

$grep md2 /etc/fstab
/dev/md2   /pg_volume_01                xfs             noatime         0 0


$cat /proc/mdstat 
Personalities : [raid1] [raid0] 
md2 : active raid0 md1[1] md0[0]
      1887428096 blocks super 1.2 256k chunks
      
md1 : active raid1 sdj1[3] sdi1[2] sdh1[1] sdg1[0]
      943714160 blocks super 1.2 [4/4] [UUUU]
      
md0 : active raid1 sdf1[3] sde1[2] sdd1[1] sdc1[0]
      943714160 blocks super 1.2 [4/4] [UUUU]
      
unused devices: <none>



---
--- iostatt
---
avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           2.72    0.00    0.33    7.44    0.03   89.48

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
sda1              0.09     0.51  0.30  0.49     9.33     7.98    21.84     0.01   11.27   2.89   0.23
sdb               5.97   300.50 39.13 31.05  3291.68  2652.40    84.70     1.46   20.74   1.27   8.89
md0               0.00     0.00 30.84 18.15  2418.94  1142.16    72.69     0.00    0.00   0.00   0.00
md1               0.00     0.00 31.46 17.60  2418.87  1135.26    72.44     0.00    0.00   0.00   0.00
md2               0.00     0.00 62.30 35.75  4837.80  2277.44    72.56     0.00    0.00   0.00   0.00
sdc               0.01     0.13 70.56 18.85  6134.89  1143.82    81.41     1.39   85.96   2.77  24.77
sdd               0.01     0.13 39.22 50.27  3377.95  3908.71    81.42     1.39   85.83   2.94  26.27
sde               0.01     0.13 38.97 50.27  3357.86  3908.71    81.43     3.69   41.30   3.23  28.81
sdf               0.01     0.13 39.17 50.27  3372.69  3908.71    81.41     1.27   84.52   2.83  25.35
sdg               0.01     0.12 39.34 18.33  3373.48  1136.97    78.20     0.59  119.40   2.93  16.88
sdh               0.01     0.12  7.91 49.75   606.80  3901.86    78.19     6.14  106.41   2.93  16.87
sdi               0.01     0.12  8.19 49.75   631.27  3901.86    78.24     5.47   94.41   2.76  16.01
sdj               0.00     0.12  7.42 49.75   572.21  3901.86    78.25     3.28   57.31   3.67  21.00

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           0.00    0.00    0.00    0.00    0.00  100.00

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz   await  svctm  %util
sda1              0.00     1.60  0.20  3.40     3.20    40.00    12.00     0.00    0.78   0.11   0.04
sdb               0.00     0.00  0.00  0.00     0.00     0.00     0.00     0.00    0.00   0.00   0.00
md0               0.00     0.00  0.00  2.60     0.00   201.60    77.54     0.00    0.00   0.00   0.00
md1               0.00     0.00  0.00  1.80     0.00   128.00    71.11     0.00    0.00   0.00   0.00
md2               0.00     0.00  0.00  4.40     0.00   329.60    74.91     0.00    0.00   0.00   0.00
sdc               0.00     0.00  0.00  3.00     0.00   202.40    67.47     0.09   28.60   3.27   0.98
sdd               0.00     0.00  0.00  3.00     0.00   202.40    67.47     0.16   51.87   7.93   2.38
sde               0.00     0.00  0.00  3.00     0.00   202.40    67.47     0.10   33.27   4.47   1.34
sdf               0.00     0.00  0.00  3.00     0.00   202.40    67.47     0.10   33.60   4.53   1.36
sdg               0.00     0.00  0.00  2.20     0.00   128.80    58.55     0.04   18.18   3.55   0.78
sdh               0.00     0.00  0.00  2.20     0.00   128.80    58.55     0.05   23.45   4.00   0.88
sdi               0.00     0.00  0.00  2.20     0.00   128.80    58.55     0.04   16.09   3.91   0.86
sdj               0.00     0.00  0.00  2.20     0.00   128.80    58.55     0.05   21.91   5.55   1.22