When multiple computers need to share a disk, udev, the device management tool in Linux, plays a crucial role in ensuring that the shared disk can be correctly recognized and handled as it is plugged and unplugged among different computers.
Imagine you have a portable hard drive that you want to share among computers at home. In this scenario, udev acts like your "Disk Coordinator."
Inserting the Disk: When you plug the portable hard drive into one of the computers, udev detects this change, much like informing each computer that a new disk has been added.
Identifying the Disk: udev ensures that each computer can correctly identify the hard drive. It's like putting a label on the hard drive, making sure that every computer knows about the existence of this disk and can use it.
Handling Disk Changes: If you perform operations on the disk on one computer, such as creating new folders, udev records these changes and ensures that other computers are also aware of them.
Safe Ejection: When you want to safely eject the hard drive from one computer, udev ensures that this operation is handled correctly to prevent data loss or corruption.
In essence, udev acts as a "Coordinator" when you share a disk, making sure that each computer is aware of the disk's status, can use it correctly, and facilitates a convenient and reliable sharing experience among multiple computers.
