APPARATUS AND METHOD FOR HARDWARE-BASED FILE SYSTEM

摘要

A method and apparatus are disclosed having a non-volatile storage device and a storage processor configured to maintain, in a memory for a file system, an object structure with a first tree structure rooted by a first root node and a second tree structure rooted by a second root node. Each tree structure optionally includes a number of intermediate nodes and data blocks. Each tree structure represents a version of the file system object. The storage processor manages changes to the file system object using the first tree structure rooted by the first root node while storing the second tree structure rooted by the second root node and vice versa for a checkpoint that is used for keeping the consistency of data on the non-volatile storage device if the contents of the memory are lost.