1. A method for data storage comprising: deleting a corrupted node under a first meta-volume node in a hierarchical tree structure, wherein the hierarchical tree structure further comprises a source node under the first meta-volume node, the corrupted node and the source node each comprise a respective set of local pointers, and the corrupted node and the source node represent respective copies of a logical volume; reconfiguring the source node to become a second meta-volume node having the same set of local pointers as the source node; creating a first new node under the second meta-volume node in the hierarchical tree structure to represent the corrupted node; configuring the first new node to have no local pointers; creating a second new node under the second meta-volume node in the hierarchical tree structure to represent the source node; and configuring the second new node to have no local pointers.