ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,499,084, issued on Dec. 16, was assigned to Google LLC (Mountain View, Calif.).
"Maintaining block level snapshots using free storage space" was invented by Paul D. Lawrence (San Jose, Calif.) and Mark Gregory Salyzyn (Orlando, Fla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A processor of a computing device is described that intercepts a write command output from a file system, the write command specifying new data to be written to a particular group of blocks of a storage device. The processor determines, based on a record of free blocks of the storage device, that the particular group of blocks of the storage device include one or more free block...