File System

File System

1. SYSTEM INTERFACE

   • Attributes
   • each system interface dependy of each system operatin have a kind of file
   • Sequential access
   • Direct access
   • Mounting
   • Sharing

2. System implementation

   • Structure
     • has a diferent file
       • Programs
       • logical file system
       • File-organization Module
       • Basic File System
       • IO control
       • Divices
   • Layered file system
     • has some important steps
   • Vitual file
     • object_oriented
     • call iterdace (The API )
     • specific type
   • each file is save in diferent part of hard drive
     • has a methods for save all files the the user whant to save
       • Location
         • Contiguous
         • Linked
         • Indexed
         • Unix
   • Free Space Management
     • Method
       • Bit Vector
       • Free List
       • Groping
       • Counting
   • Directory/File management
     • Gaining consistency
       • checker
       • Back-up-
       • Recovery
   • Eficiency and performance
   • Sun Network File System
     • The mount protocol
     • The NFS Protocol
     • NFS Architecture
     • Caches of remote data