File system hierarchy mirroring across cloud data stores

A mirror device configured to operate at an object-based file system, the mirror device comprising:

• a processing unit comprising one or more processors;
• and
• memory coupled with and readable by the processing unit and storing therein a set of instructions which, when executed by the processing unit, causes the mirror device to:
• identify a first cloud object store of a first cloud interface device and a second cloud object store of a second cloud interface device within a virtual device layer of the object-based file system, wherein the first cloud object store supports a first native set of attributes of data objects stored therein, and the second cloud object store supports a different second native set of attributes of data objects stored therein;
• retrieve a first set of cloud storage objects stored in the first cloud object store, the first cloud interface device storing a first instance of a tree hierarchy, wherein the tree hierarchy includes a mapping of logical data blocks corresponding to the first set of cloud storage objects;
• store a second instance of the tree hierarchy in the second cloud object store, wherein the first instance and the second instance of the tree hierarchy are identical;
• use the second instance of the tree hierarchy to create a second set of cloud storage objects to be stored in the second cloud object store;
• and
• cause at least one read operation to be performed with respect to the tree hierarchy, wherein the at least one read operation comprises receiving at least one cloud storage object from either the first cloud object store or the second cloud object store.

A computer-program product tangibly embodied in a non-transitory machine-readable storage medium, including instructions configured to cause one or more data processors to perform actions including comprising:

• identifying a first cloud object store of a first cloud interface device and a second cloud object store of a second cloud interface device within a virtual device layer of an object-based file system, wherein the first cloud object store supports a first native set of attributes of data objects stored therein, and the second cloud object store supports a different second native set of attributes of data objects stored therein;
• retrieving a first set of cloud storage objects stored in the first cloud object store, the first cloud interface device storing a first instance of a tree hierarchy, wherein the tree hierarchy includes a mapping of logical data blocks corresponding to the first set of cloud storage objects;
• storing, by a mirror device and via the second cloud interface device, a second instance of the tree hierarchy in the second cloud object store, wherein the first instance and the second instance of the tree hierarchy are identical;
• using the second instance of the tree hierarchy to create a second set of cloud storage objects to be stored in the second cloud object store;
• and
• causing at least one read operation to be performed with respect to the tree hierarchy, wherein the at least one read operation comprises receiving at least one cloud storage object from either the first cloud object store or the second cloud object store.