filesystems - Acyclic Graph directory and General Graph Directory -


i need simple explanation or introduction acyclic graph directories , general graph directories. google it, explanations technical.

acyclic graph directories:

  • allow directories link 1 another, allow multiple directories contain same file i.e., 1 copy of file exists , change in file can viewed directories in contained.
  • results in acyclic graphs
  • two users can name same file or same directory
  • duplicate paths may complicate task of backing periodically

general graph directories:

  • allow cycles
  • more flexible
  • more costly
  • need garbage collection (circular structures)
  • there subset of directories reference count > 0, none of these reachable root

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