Journaled File System

A Journaled File System (JFS) is a type of file management system used by computers to organize and store data. It maintains a "journal" or log that records changes before they are made, similar to a draft for a report. This helps prevent data loss or corruption, especially during unexpected events like power outages or crashes. If something goes wrong, the system can refer to the journal to recover or restore files to their last known good state, ensuring better reliability and stability for users' data.