US 9,317,538 B1 · Methods for generating data sets using catalog entries

Abstract

Methods for recovering data sets using existing catalog entries are described. The data sets to be recovered may correspond with a portion of a data storage volume that has been archived. In some embodiments, an archived data set may be re-cataloged to a pseudo-volume in order to preserve catalog sequencing information for data sets that are members of the data set. In some embodiments, a data storage system may utilize a system interrupt to detect that a request to create a new data set has failed due to a conflict with an existing catalog entry, acquire data set creation parameters associated with the request to create the new data set, and issue a catalog alter command using the data set creation parameters in response to detecting that the request to create the new data set has failed.

Claims20

Dependent claims

A method for restoring a data set using a data storage system, comprising:

determining a new volume for storing the data set;
identifying an archive source that stores data corresponding with the data set;
detecting that a request to create a new data set for the data set on the new volume has failed due to a duplicate name conflict with a catalog entry in a catalog of the data storage system;
acquiring data set creation parameters associated with the request to create the new data set;
issuing a catalog alter request using the data set creation parameters to alter the catalog entry in response to detecting that the request to create the new data set has failed due to the duplicate name conflict, the issuing the catalog alter request comprises altering the catalog entry to point to the new volume for storing the data set;
and
transferring the data corresponding with the data set from the archive source to the new volume.

4 more elements

A computer program product, comprising:

a non-transitory computer readable storage medium having computer readable program code embodied therewith, the computer readable program code comprising:
computer readable program code configured to receive a restore command to restore a data set;
computer readable program code configured to determine a second storage device for storing the data set;
computer readable program code configured to identify a first storage device that stores data corresponding with the data set;
computer readable program code configured to detect that a request to create a new data set for the data set on the second storage device has failed due to a duplicate name already existing in a catalog;
computer readable program code configured to acquire a data set creation parameter associated with the request to create the new data set;
computer readable program code configured to issue a catalog alter request using the data set creation parameter to alter a catalog entry of the catalog in response to detecting that the request to create the new data set has failed due to the duplicate name already existing in the catalog, the catalog alter request causes the catalog entry to point to the second storage device;
and
computer readable program code configured to cause the data corresponding with the data set to be transferred from the first storage device to the second storage device.

6 more elements

Dependencies are inferred from the claim text.

Methods for generating data sets using catalog entries

Life of this patent

Methods for generating data sets using catalog entries

Life of this patent

Abstract

Claims20