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What is a journalling filesystem?

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A journaling file system is a file system that keeps track of the changes it intends to make in a journal (usually a circular log in a dedicated area of the file system) before committing them to the main file system. In the event of a system crash or power failure, such file systems are quicker to bring back online and less likely to become corrupted.

Includes CC-BY-SA content from Wikipedia's Journaling_file_system article (authors)

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