File-System Interface

File-System Interface

1. Tecnológico de Costa Rica, Carrera: Ingeniería en Computación, Sede: Cartago, Curso: Principios de sistemas operativos, Profesor: Esteban Arias Méndez, Estudiante: Jason David Espinoza Siles, Carné: 201223941, II semestre, 2016, Libro: Operating System Concepts 9th.pdf capítulo # 11

2. File Concept

   • Contiguous logical address space

3. File Structure

   • None - sequence of words, bytes  Simple record structure  Lines  Fixed length  Variable length  Complex Structures  Formatted document  Relocatable load file  Can simulate last two with first method by inserting appropriate control characters  Who decides:  Operating system  Program

4. Directory Structure

5. Disk Structure

   • Disk can be subdivided into partitions  Disks or partitions can be RAID protected against failure  Disk or partition can be used raw – without a file system, or formatted with a file system  Partitions also known as minidisks, slices  Entity containing file system known as a volume  Each volume containing file system also tracks that file system’s info in device directory or volume table of contents  As well as general-purpose file systems there are many special-purpose file systems, frequently all within the same operating system or computer

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