Abstract: Method, apparatus and product for data cloning in a memory-based file systems. A content of each object of the file system is retained in data units and represented using a tree of the nodes comprising tree nodes and leaf nodes. The file system utilizes a volatile resource usage collection and volatile reference counters for each node of the nodes. In response to mounting the file system, a storage retaining a file system metadata is scanned to compile the volatile resource usage collection and the volatile reference counters. In response to a determination to reuse a pointed node of a tree of an object by a pointing node, a volatile reference counter of the pointed node is updated and the pointing node is atomically set, using a single instruction, to point to the pointed node.

Abstract: A method and system for compute element state replication is provided. The method includes transforming at least a subset of metadata of a source compute element from a memory tier of the source compute element to a block representation; within a destination compute element, mounting the block representation; reverse transforming the metadata to a memory tier of the destination compute element; and using the reverse transformed metadata to operate the destination compute element.