1 / 16

Network File System (NFS)

Network File System (NFS). The remote access model. The upload/download model. NFS Architecture (2). The basic NFS architecture for UNIX systems. Communication. Reading data from a file in NFS version 3. Reading data using a compound procedure in version 4. Naming (1).

ondrea
Download Presentation

Network File System (NFS)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Network File System (NFS) • The remote access model. • The upload/download model

  2. NFS Architecture (2) • The basic NFS architecture for UNIX systems.

  3. Communication • Reading data from a file in NFS version 3. • Reading data using a compound procedure in version 4.

  4. Naming (1) • Mounting (part of) a remote file system in NFS.

  5. Naming (2) • Mounting nested directories from multiple servers in NFS.

  6. Automounting (1) • A simple automounter for NFS.

  7. Automounting (2) • Using symbolic links with automounting.

  8. Semantics of File Sharing (1) • On a single processor, when a read follows a write, the value returned by the read is the value just written. • In a distributed system with caching, obsolete values may be returned.

  9. Semantics of File Sharing (2) • Four ways of dealing with the shared files in a distributed system.

  10. File Locking in NFS (1) • NFS version 4 operations related to file locking.

  11. File Locking in NFS (2) Requestaccess Currentaccessstate • The result of an open operation with share reservations in NFS. • When the client requests shared access given the current denial state. • When the client requests a denial state given the current file access state.

  12. Client Caching (1) • Client-side caching in NFS.

  13. Client Caching (2) • Using the NFS version 4 callback mechanism to recall file delegation.

  14. RPC Failures • Three situations for handling retransmissions. • The request is still in progress • The reply has just been returned • The reply has been some time ago, but was lost.

  15. Security • The NFS security architecture.

  16. Secure RPCs • Secure RPC in NFS version 4.

More Related