1. A method, comprising: receiving, by a second storage system, a first plurality of data container attributes of a first data structure stored at a first storage system; comparing the first plurality of data container attributes to a second plurality of data container attributes of a second data structure at the second storage system to find matching data container attributes found within both the first plurality of data container attributes and the second plurality of data container attributes; creating a mapping using the matching data container attributes, the mapping comprising a first mapping entry that maps a first file of an original dataset within the first data structure at the first storage system to a second file of a copy dataset within the second data structure at the second storage system, the second data structure maintained as a mirrored backup for the first data structure using an existing mirror relationship between the original dataset and the copy dataset, wherein an inode map is created at the second storage system; converting the existing mirror relationship, corresponding to a physical mirror at the first storage system having a first physical layout for the copy dataset that is the same as an original physical layout of the original dataset, to a new mirror relationship having a logical mirror with a second physical layout for the copy dataset that is different than the first physical layout; and utilizing the mapping to facilitate mirroring of changes to the original dataset to the copy dataset using the new mirror relationship, wherein the utilizing comprises: receiving a mirror transfer of data of the first file from the first storage system; evaluating the inode map using a first inode number of the first file to identify a second inode number of the second file as being mapped to the first inode number; locating the second file using the second inode number; and updating the second file using the data of the first file.