How to check how the disk is used in the system?

Question

linux

Good afternoon ! tell me if there is an opportunity to find out how the disk is used in the Ubuntu server system? What types of operations are more - sequential or random?

Answer 1

Well, pull iostat, for example.

Answer 2

$ dstat --disk --fs

Answer 3

these utilities just show disk usage, but how to understand that he writes sequentially or randomly, is it possible? )