Methods and systems for restoring directories containing multi-part data containers

Abstract

Systems and methods for restoring multi-part files and directories in cloud storage environments are described. A catalog inode associated with a multi-part file is restored, containing metadata comprising inode parts corresponding to file parts. The inode parts are iteratively restored based on the catalog inode metadata. Corresponding file parts are then retrieved from cloud storage resources and assembled to reconstruct the multi-part file. The process may involve creating and updating checkpoints, restoring subsets of inode parts, and parallel retrieval of file parts. For directory restoration, the method is applied to multiple catalog inodes within the directory structure. The restoration process may handle flexible volumes and additional directories. Apparatuses implementing these methods include processors and memory storing instructions to perform the restoration steps. The systems and methods enable efficient, granular restoration of complex file structures in distributed cloud environments while maintaining data integrity and providing robust recovery capabilities.