International Business Machines Corporation
Establishing object atomicity in snapshot based disaster recovery environments

Abstract:

A computer-implemented method, according to one embodiment, includes: capturing a snapshot of data stored at a primary storage location, and determining a transaction identification which corresponds to each file operation included in the snapshot, where each file operation includes a respective number of sub-operations. Data included in the snapshot which corresponds to completed ones of the sub-operations is identified, and the determined transaction identifications as well as the identified data is used to populate entries in a data structure. The snapshot is sent to a secondary storage location, and an acknowledgement is received from the secondary storage location for each of the completed sub-operations that are successfully performed at the secondary storage location. Furthermore, the data structure is updated based on the received acknowledgements.