Patent ID: 6374268
Filing Date: 2002-04-16
Classification: G06F,Y10S

Abstract:
An incremental file system comprising:a first storage area for storing files wherein said first storage area stores each original file of a plurality of related files and wherein said first storage area is accessible to multiple processes; a second storage area for storing delta files wherein said second storage area is accessible to, and is associated with, one process of said multiple processes; a file creation interceptor to intercept a file create request by said one process directed to an original file stored in said first storage area wherein operation of said file interceptor is transparent with respect to said one process; and a file access redirector, coupled with said file creation interceptor, for directing further read and write access to said original file by said one process in accordance with the existence of a delta file stored in said second storage area and corresponding to said original file wherein operation of said file access redirector is transparent with respect to said one process and wherein said second storage area includes fewer delta files than the number of said related files in said first storage area.