This presents an overview of Linux File system for IVI system. When applying Linux to the IVI system, it will suffer from the requirements of the file system. This is because there is a problem more difficult than the traditional Linux system. e.g. robustness, mount-time and security. Mitsuharu will talk about characteristics and tuning method of Ext4, Btrfs and Log-structured file system. He will also show evaluation result in each file system.