From Fedora Project Wiki
Description
Monitor disk I/O with Cockpit
Setup
Open Cockpit in your browser as described here.
How to test
- Navigate to "Storage" for your machine.
- Copy some big files around on your machine, preferably from one disk to another. Maybe
tar -cf /var/tmp/usr.tar /usr. - Observe the graphs and "Reading" and "Writing" columns at the top of the page.
- Hover with your mouse over the graphs.
Expected Results
The page should show the ongoing data transfer. Hovering over a graph should highlight the corresponding disk.