JFTL: A flash translation layer based on a journal remapping for flash memory

@article{Choi2009JFTLAF,
  title={JFTL: A flash translation layer based on a journal remapping for flash memory},
  author={Hyun-jin Choi and Seung-Ho Lim and Kyu Ho Park},
  journal={TOS},
  year={2009},
  volume={4},
  pages={14:1-14:22}
}
In flash memory-based storage, a Flash Translation Layer (FTL) manages the mapping between the logical addresses of a file system and the physical addresses of the flash memory. When a journaling file system is set up on the FTL, the consistency of the file system is guaranteed by duplications of the same file system changes in both the journal region of the file system and the home locations of the changes. However, these duplications inevitably degrade the performance of the file system. In… CONTINUE READING

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Key Quantitative Results

  • Our experiments confirm that, when associated with a writeback or ordered mode of a conventional EXT3 file system, the JFTL enhances the performance of EXT3 by up to 20%.

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