Patent ID: 8412868
Filing Date: 2013-04-02
Classification: G06F

Abstract:
1. For use in a computer system comprising a file system coupled with a storage medium and at least one application program interface (API) configured to communicate with the file system by means of file access-related requests, a method for storing a compressed file comprising: a) intercepting at least one of said file access-related requests generated via the API; and b) providing at least one of the following with respect to said intercepted request: c) determining a serial number of first compressed section comprising data to be updated constituting the original compressed section; d) determining the storage location of the compressed data to be updated by referring to a section table which holds information on CLUs corresponding to said compressed section and storage location thereof; e) restoring the cluster from said original compressed section; f) calculating the offset of updating data within said cluster and updating of the given data range; g) compressing the updated cluster into an updated compressed section; h) overwriting of said original compressed section with updated compressed section; and i) updating the section table.