File - Persistent Storage Operations


In a file system, the basic persistent storage operations that permits to manage the file content are called:

  • create - Creates a new file and open it
  • write - Opens the file for write access (append - Appends the new data to the end of the file)
  • read - Opens the file for read access
  • delete - Delete the file

They are part made through file system request.


File System

The local/os file system performs all requests against the hard drive at the cluster size and holds them in memory in a cache.


An application using the OS API can thereafter read file content from the File System Cache:

This operation is known as the scatter-gather scheme 1)


When the file system reads and writes file, file lock may be asked or taken in order to prevent data corruption.

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