Patent ID: 7328217

Claim:
A system, comprising: a storage device configured to provide a storage space for data storage; and a file system configured to map a plurality of files and a plurality of named streams corresponding respectively to said files to said storage space for storage and to manage access to said storage device, wherein said named streams are configured to store metadata corresponding respectively to said files, and wherein said file system is configured to: detect an operation to modify an identity of a first one of said files; in response to detecting said operation, store a record of said operation within a respective one of said named streams corresponding to said first file, wherein said record includes a signature corresponding to said first file; detect an identity-modifying file operation specifying one or more source ones of said plurality of files and a destination one of said plurality of files; and in response to detecting said identity-modifying file operation, for existing records of operations previously detected by said file system and responsively stored within said respective named streams corresponding to said one or more source files, store at least some of said existing records within said respective named stream corresponding to said destination file.