Hi Experts,

Is there a possible way to monitor CPU Util for the drbd resource. Actually am 
getting cent percent utilization even i dont have much load.

Am maintaining my setup with three blocks one for Data, other for 
configurations and the other for logs which was logically mounted.


[root@pcpha-dev-01 ~]# iostat -x 5  | grep drbd
drbd0             0.00     0.00    0.00    0.00     0.00     0.00     0.00 
858980.47    0.00   0.00  99.94
drbd1             0.00     0.00    0.00    0.00     0.00     0.00     0.00   
101.94    0.00   0.00  99.94
drbd2             0.00     0.00    0.00    0.80     0.00     3.20     4.00 
858935.49    0.25 1249.25  99.94
drbd0             0.00     0.00    0.00    0.00     0.00     0.00     0.00 
858980.46    0.00   0.00 100.00
drbd1             0.00     0.00    0.00    0.00     0.00     0.00     0.00   
102.00    0.00   0.00 100.00
drbd2             0.00     0.00    0.00    2.80     0.00    19.20     6.86 
858935.46    0.07 357.14 100.00

[xxxx@xxxx]# iostat -x -d
Linux 2.6.32-431.el6.x86_64 (xxxx)      10/31/2016      _x86_64_        (4 CPU)

Device:         rrqm/s   wrqm/s     r/s     w/s   rsec/s   wsec/s avgrq-sz      
       avgqu-sz   await  svctm  %util
sda               0.00                  0.86    0.01    1.67    10.96    20.22  
  18.50                    0.00        0.73       0.41        0.07
dm-0              0.00                0.00    0.00    0.02     0.05     0.12    
 9.97                      0.00         9.66       1.99        0.00
dm-1              0.00               0.00    0.00    0.00     0.00     0.00     
8.00                       0.00        2.14        0.82        0.00
dm-2              0.00               0.00    0.00    0.02     0.02     0.12     
9.22                       0.00         1.97        0.01        0.00
dm-3              0.00               0.00    0.00    0.78     0.00     6.23     
8.00                        0.00         0.48        0.21       0.02
dm-4              0.00               0.00    0.00    0.00     0.00     0.00     
7.99                        0.00         3.30      2.89        0.00
dm-5              0.00                0.00    0.00    0.48     0.01     3.85    
 8.01                       0.00         0.64      0.22        0.01
dm-6              0.00                0.00    0.00    0.01     0.00     0.04    
 8.00                      0.00        24.47     0.02         0.00
dm-7              0.00               0.00    0.01    0.03     6.50     0.21   
205.25                     0.00         37.54   1.13         0.00
dm-8              0.00               0.00    0.00    0.02     2.21     0.15   
109.64                    0.00          9.22      0.89        0.00
dm-9              0.00                0.00    0.00    1.19     2.17     9.50    
 9.81                      0.00          0.65      0.31        0.04
drbd0             0.00                 0.00    0.00    0.01     0.00     0.08   
  8.00                      0.20        421.71 10481.54  10.45
drbd1             0.00                0.00    0.00    0.01     0.00     0.07    
 7.95                      0.06         76.94    12030.16  10.49
drbd2             0.00                 0.00    0.00    0.56     0.00     3.26   
  5.85                      0.15         0.61      176.92   9.87

[xxxx@xxxx]# iostat -x 5 /dev/vg1/lvdblog
Linux 2.6.32-431.el6.x86_64 (xxxx)      10/31/2016      _x86_64_        (4 CPU)


avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           2.21    0.00    0.75    0.00    0.00   97.04

Device:         rrqm/s   wrqm/s     r/s     w/s   rsec/s   wsec/s avgrq-sz 
avgqu-sz   await  svctm  %util
dm-9              0.00     0.00    0.00    1.60     0.00    12.80     8.00     
0.00    1.00   0.62   0.10

Regards,
Madhan.

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