______ In-class notes for 10/14/2020 (CS 273 (OS), Fall 2020)
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In-class notes for 10/14/2020

CS 273 (OS), Fall 2020

File systems overview

  • What are common features of file systems? How do they relate to OS?

  • What problems need to be solved in order to implement a good file system?

  • What implementation issues need to be addressed?

For reference: A simple example file system: FAT (used by MS-DOS)

  • Blocks on disk - each having a unique address

  • File Allocation Table: array indexed by block address, elements are addresses of next blocks

  • Directory is a table of file name, size, protection, etc., plus a starting FAT index




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