Troubleshooting Ubuntu Troubleshooting Disk Read/Write Busy

Ubuntu troubleshoots disk read/write busy problems using several methods:

1. iotop: a tool to view disk I/O usage.
2. vmstat: view system virtual memory, processes, CPU activity and other information

Install iotop (if not already installed):
sudo apt-get install iotop

Run iotop to track disk I/O:
sudo iotop

View system status:
vmstat 1