The file system

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  • Windows 2000 đã giới thiệu Distributed File System (DFS) cho phép bạn hợp nhất các chia sẻ file giúp người dùng có thể truy cập tới chúng từ một điểm trên mạng. Windows Server 2003 đã cải tiến công nghệ mô hình WAN cho phép các điểm DFS tồn tại qua các liên kết WAN. Trong bài này, Quản Trị Mạng sẽ giải thích hoạt động của DFS cũng như đưa ra các bước thiết lập và cấu hình DFS trên Windows Server 2003. Trong môi trường DFS bạn có thể tập trung các thư mục và tập tin...

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  • 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 12.1 Silberschatz, Galvin and Gagne ©2002 Operating System Concepts 12.

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  • History Design Principles Kernel Modules Process Management Scheduling Memory Management File Systems Input and Output Interprocess Communication Network Structure Security History Linux is a modem, free operating system based on UNIX standards. First developed as a small but self-contained kernel in 1991 by Linus Torvalds, with the major design goal of UNIX compatibility. Its history has been one of collaboration by many users from all around the world, corresponding almost exclusively over the Internet.

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  • Chapter objectives includes: 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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  • In this chapter, students will be able: To explain the function of file systems; to describe the interfaces to file systems; to discuss file-system design tradeoffs, including access methods, file sharing, file locking, and directory structures; to explore file-system protection.

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  • This chapter to explore the history of the UNIX operating system from which Linux is derived and the principles upon which Linux’s design is based, to examine the Linux process model and illustrate how Linux schedules processes and provides interprocess communication, to look at memory management in Linux, to explore how Linux implements file systems and manages I/O devices.

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  • This chapter discusses a programmer’s view of files and the file system. It describes fundamental file organizations, directory structures, operations on files and directories, and file sharing semantics, which specify the manner in which results of file manipulations performed by concurrent processes are visible to one another. Issues that compromise reliability of a file system are discussed. Fault tolerance using atomic actions and recovery using backups are described.

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  • Lecture Operating system concepts (Sixth ed) - Module A: The FreeBSD system. The following will be discussed in this chapter: history, design principles, programmer interface, user interface, process management, memory management, file system, I/O system, interprocess communication.

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  • This chapter is primarily concerned with issues surrounding file storage and access on the most common secondary-storage medium, the disk. We explore ways to structure file use, to allocate disk space, to recover freed space, to track the locations of data, and to interface other parts of the operating system to secondary storage. Performance issues are considered throughout the chapter.

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  • Chapter 16 looks at the current major research and development in distributed-file systems (DFS). The purpose of a DFS is to support the same kind of sharing when the files are physically dispersed among the various sites of a distributed system.

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  • This chapter is primarily concerned with issues surrounding file storage and access on the most common secondary-storage medium, the disk. We explore ways to structure file use, to allocate disk space, to recover freed space, to track the locations of data, and to interface other parts of the operating system to secondary storage. Performance issues are considered throughout the chapter.

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  • Chapter 16 looks at the current major research and development in distributed-file systems (DFS). The purpose of a DFS is to support the same kind of sharing when the files are physically dispersed among the various sites of a distributed system.

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  • File hệ thống có thể coi là 1 trong các lớp bên dưới hệ điều hành mà nhiều lúc người sử dụng chúng ta không hề nghĩ tới, trừ trường hợp phải đối mặt với rất nhiều tùy chọn về file system trong Linux. Trong bài viết dưới đây, chúng tôi sẽ giới thiệu với các bạn một số điểm cơ bản để hiểu rõ và nắm bắt kiến thức nhằm lựa chọn file system phù hợp với hệ thống. Khả năng hỗ trợ của file hệ thống Linux hoàn toàn khác biệt so với Windows và Mac OS X....

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  • Network Security. Objectives: In this chapter, you will learn to: Identify security threats to enterprise networks. Describe methods to mitigate security threats to enterprise networks. Configure basic router security. Disable unused router services and interfaces. Use the Cisco SDM one-step lockdown feature. Manage files and software images with the Cisco IOS Integrated File System (IFS).

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  • Linux History Design Principles Kernel Modules Process Management Scheduling Memory Management File Systems Input and Output Interprocess Communication Network Structure Security To explore the history of the UNIX operating system from which Linux is derived and the principles which Linux is designed upon To examine the Linux process model and illustrate how Linux schedules processes and provides interprocess communication To look at memory management in Linux To explore how Linux implements file systems and manages I/O devices...

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  • File Concept Access Methods Directory Structure File-System Mounting File Sharing Protection To explain the function of file systems To describe the interfaces to file systems To discuss file-system design tradeoffs, including access methods, file sharing, file locking, and directory structures To explore file-system protection .

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  • File-System Structure File-System Implementation Directory Implementation Allocation Methods Free-Space Management Efficiency and Performance Recovery Log-Structured File Systems NFS Example: WAFL File System 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 File-System Structure File structure Logical storage unit Collection of related information File system resides on secondary storage (disks) File system organized into...

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  • Background Naming and Transparency Remote File Access Stateful versus Stateless Service File Replication An Example: AFS To explain the naming mechanism that provides location transparency and independence To describe the various methods for accessing distributed files To contrast stateful and stateless distributed file servers To show how replication of files on different machines in a distributed file system is a useful redundancy for improving availability To introduce the Andrew file system (AFS) as an example of a distributed file system...

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  • One of the most revolutionary concepts of the UNIX operating system was its file system, the way in which it stores data. Although most other operating systems have copied it since then, including Microsoft’s platforms, none have come close to the elegance with which it is implemented. Many aspects of the file system are not immediately obvious, some of them not even to seasoned UNIX users.

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  • Lecture Operating System: Chapter 10 - Unix and Linux presented History of unix, Overview of unix, Processes in unix, Memory management in unix, Input/output in unix, The unix file system, Security in unix.

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