JFS log: how the journaled file system performs logging

Authors:
Steve Best
Affiliations:
IBM Linux Technology Center
Venue:
ALS'00 Proceedings of the 4th annual Linux Showcase & Conference - Volume 4
Year:
2000

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Analysis and evolution of journaling file systems

ATEC '05 Proceedings of the annual conference on USENIX Annual Technical Conference

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Abstract

This paper describes the logging done by the Journaled File System (JFS). By logging, JFS can restore the file system to a consistent state in a matter of seconds, versus minutes or hours with non-journaled file systems. This white paper gives an overview of the changes to metadata structures that JFS logs.