How does journaling improve the reliability of a file system?
- Improves file compression
- Prevents data loss in case of system crashes
- Reduces disk space usage
- Speeds up file access
Journaling in a file system involves recording changes to data in a journal before actually writing them to the main storage. This technique enhances reliability by preventing data loss in case of unexpected system crashes or power failures. When a system crashes, the journal can be used to replay transactions that were not yet committed to the main storage, ensuring data consistency and integrity. As a result, journaling helps maintain the reliability and consistency of file systems, making them more resilient to failures and ensuring data integrity.
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