I/O blockage. How to track automatically a problem with processes?

Question

linux

One week, not one message from Zabiks, another week a constant blockage in I / O.
I would like to understand what is the problem. How to make monitoring on Linux in my case.
To determine by running the script. Which will show in Zabiks-alert or just in a
text file. That there is a problem with such or such a process.

Answer 1

iotop -oka and wait a couple of minutes