Filesystems for flash

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jffs2

Read this very short and well explained summary for the whole story: http://wh.fh-wedel.de/~joern/logfs.pdf

  • the standard fs
  • slow mount time and high RAM usage for big cards (grows linearly with flash size, since it reads block by block through the flash)
  • design summary at http://sourceware.org/jffs2/jffs2.pdf
  • compression (gzip) available "on the fly"

yaffs2

LogFS