Reusing snapshots in a network data management protocol backup operation

摘要

Mechanisms, in a data processing system, are provided for performing a data management operation. These mechanisms identify one or more defined groups of data elements that are a target of the data management operation. One or more previously generated snapshot files associated with the one or more defined groups are identified and a determination is made as to whether at least one previously generated snapshot file of the one or more previously generated snapshot files associated with the one or more defined groups is able to be reused when performing the data management operation. The data management operation is performed based on the determination of whether at least one previously generated snapshot file of the one or more previously generated snapshot files associated with the one or more defined groups is able to be reused when performing the data management operation.

主权项

1. A method, in a data processing system, for performing a data management operation comprising:
determining, by the data processing system, whether at least one previously generated snapshot file of one or more previously generated snapshot files associated with one or more defined groups of data elements that are a target of the data management operation is able to be reused, wherein determining whether at least one previously generated snapshot file is able to be reused comprises:
retrieving one or more expiration time variable values associated with the one or more defined groups of data elements:determining, for each previously generated snapshot file in the one or more previously generated snapshot files, whether the previously generated snapshot file is unexpired based on the retrieved one or more expiration time variable values associated with the one or more defined groups of data elements:and determining that previously generated snapshot file in the one or more previously generated snapshot files is able to be reused in response to a determination that the previously generated snapshot file is unexpired based on the retrieved one or more expiration time variable values associated with the one or more defined group f data elements; and
performing, by the data processing system, the data management operation based on the determination of whether at least one previously generated snapshot file of the one or more previously generated snapshot files associated with the one or more defined groups is able to be reused.