APPARATUS AND METHOD FOR MANAGING FILE SYSTEM

摘要

A device and a method for managing a file system are provided to prevent performance degradation of the file system for sectors, which are not synchronized and are not continuous by unpredictable sudden power-off, by storing a log reflecting change of metadata in a non-volatile memory storage medium. A memory(120) stores data and first metadata for the data, and a non-volatile storage medium(130) stores second metadata changed according to change of the data when the data is changed. A controller(140) updates the first metadata by using the second metadata. The controller checks remaining capacity of the non-volatile storage medium and stores the second metadata to a storage medium(110) when the remaining capacity of the non-volatile storage medium is smaller than a reference level.