How to find out the total bandwich by files?

Question

linux

Good afternoon!
There is a problem with the load on the disk system.
How to find out which file is being actively read-written at a given time (for example, measure for 1 minute)?
SSD utilization at the level of 90% for no apparent reason for me.
We need a command that displays statistics like iotop -a, but not by processes, but by files.

Answer 1

Well, look at the process, then look at the lsof which files are being used

Answer 2

You can see iotopwhich process generates the load, and then fatrace`ohm - on which files.
Z.Y. - useful to google, here's another rather interesting way - https://serverfault.com/questions/327985/linux-io-...