Journaling file system

Journaling file system means that file operations are written in a log file before these actions are performed with files or folders. It ensures that it is possible to replay this actions in case when there was accidental loss of power and the operation could not be completed.

Writing data to a log file is usually much quicker than performing actual file or folder operations.

Just imagine a folder that contains a lot of files. Performing a file system operation with such a folder maybe a time consuming operation and likelihood of an error due to power failure chance increases, where writing information to a log file with the intended action will be much quicker operation in this example.

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