11_implement of file system

11_implement of file system - Chapter 11: Chapter...

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Chapter 11: Chapter 11: Implementing File Systems Implementing File Systems
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11.2 Modified by Bo Li ©2009 Operating System Concepts Chapter 11: Implementing File Systems Chapter 11: Implementing File Systems File-System Structure File-System Implementation Directory Implementation Allocation Methods Free-Space Management
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11.3 Modified by Bo Li ©2009 Operating System Concepts Objectives Objectives To describe the details of implementing local file systems and directory structures To describe the implementation of remote file systems To discuss block allocation and free-block algorithms and trade- offs
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11.4 Modified by Bo Li ©2009 Operating System Concepts File File - - System Structure System Structure File structure Logical storage unit Collection of related information A file system allow the data to be stored, located, and retrieved efficiently, it needs to deal with two issues logical view: file definition, attributes, operations and directory for organizing files system view: map logical file system onto the physical storage File system resides on secondary storage (disks) File system organized into layers File control block – storage structure consisting of information about a file
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11.5 Modified by Bo Li ©2009 Operating System Concepts Layered File System Layered File System
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11.6 Modified by Bo Li ©2009 Operating System Concepts A Typical File Control Block A Typical File Control Block
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11.7 Modified by Bo Li ©2009 Operating System Concepts In In - - Memory File System Structures Memory File System Structures
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This note was uploaded on 09/24/2010 for the course COMP 252 taught by Professor Wong during the Fall '09 term at HKUST.

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11_implement of file system - Chapter 11: Chapter...

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