TAILIEUCHUNG - File System Implementation

File System Structure File System Implementation Directory Implementation Allocation Methods Free-Space Management Efficiency and Performance Recovery Log-Structured File Systems NFS File-System Structure File structure Logical storage unit Collection of related information File system resides on secondary storage (disks). File system organized into layers. File control block – storage structure consisting of information about a file. Operating System Concepts Silberschatz, Galvin and Gagne ©2002 Operating System Concepts Silberschatz, Galvin and Gagne ©2002 Layered File System A Typical File Control Block Operating System Concepts Silberschatz, Galvin and Gagne ©2002 Operating System Concepts Silberschatz, Galvin and Gagne ©2002 In-Memory File System Structures The following figure illustrates the necessary file system structures provided by the operating systems. Figure 12-3(a) refers. | Chapter 12 File System Implementation File-System Structure File System Structure File System Implementation Directory Implementation Allocation Methods Free-Space Management Efficiency and Performance Recovery Log-Structured File Systems NFS File structure Logical storage unit Collection of related information File system resides on secondary storage disks . File system organized into layers. File control block - storage structure consisting of information about a file. Operating System Concepts Silberschatz Galvin and Gagne 2002 Operating System Concepts Silberschatz Galvin and Gagne 2002 f Layered File System Operating System Concepts application programs logical file system i fFle-organiiation module I baste file system I O conlrol I devices Silberschatz Galvin and Gagne 2002 In-Memory File System Structures The following figure illustrates the necessary file system structures provided by the operating systems. Figure 12-3 a refers to opening a file. Figure 12-3 b refers to reading a file. Operating System Concepts Silberschatz Galvin and Gagne 2002 Operating System Concepts A Typical File Control Block Silberschatz Galvin and Gagne 2002 11 Virtual File Systems Schematic View of Virtual File System Virtual File Systems VFS provide an object-oriented way of implementing file systems. VFS allows the same system call interface the API to be used for different types of file systems. The API is to the VFS interface rather than any specific type of file system. Operating System Concepts Silberschatz Galvin and Gagne 2002 Directory Implementation Linear list of file names with pointer to the data blocks. simple to program time-consuming to execute Hash Table - linear list with hash data structure. decreases directory search time collisions - situations where two file names hash to the same location fixed size I Allocation Methods An allocation method refers to how disk blocks are allocated for files Contiguous allocation Linked allocation Indexed .

• Cơ sở dữ liệu
• file system implementation
• hệ thống tập tin
• cấu trúc dữ liệu
• hệ điều hành Silberschatz
• cấu trúc tập tin
• Operating system concepts
• Lecture Operating system concepts
• Operating system
• File system structure
• Directory implementation
• Operating system structure
• Hệ điều hành
• Operating system concept
• Operating system concept (Ninth edition)
• Storage management
• Mass storage structure
• File system interface
• Distributed file systems
• Lecture Operating system
• File systems
• File system implementation
• Example file systems
• Long term information storage
• File Systems
• Example file systems
• Quản trị hệ điều hành
• Hệ điều hành nâng cao
• Bài giảng Hệ điều hành nâng cao
• Hệ điều hành nâng cao Chapter 11
• Tập tin hệ thống
• Thực hiện thư mục
• Allocation Methods
• Free Space Management
• Efficiency and Performance
• Computer system organization
• Operating Systems Do
• Computer System
• Process Management
• Distributed Systems
• Computing Environments
• Volume Manager
• Security Files
• Managing File Systems
• System Startup
• Information Center
• Serial Devices
• system pic microcontroller
• pic microcontroller 16
• the implementation of programs
• file register RAM
• the chip Pic