US 2022/0091944 A1Published application

Data storage volume recovery management

AssigneeInternational Business Machines Corporation

InventorsLourie GOODALL, Erika DAWSON, Joseph M. SWINGLER

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Abstract

Provided are a computer program product, system and method for restoring volumes in a data storage system. A virtual restoration of a volume of data stored in storage is performed using a target volume. In one embodiment, the virtual restoration includes configuring metadata associated with the target volume, to map the target volume to the recover volume as a virtual restoration of the recover volume. In response to a request by a host for data stored on the recover volume, physical restoration of data of the recover volume is performed using the target volume. In one embodiment, the physical restoration includes transferring data to the target volume from the recover volume to which the target volume is mapped by the virtual restoration. In addition, transferred data is relabeled as target volume data instead of recover volume data.

Claims25

Dependent claims

A computer program product for restoring a volume of data stored in storage, wherein the computer program product comprises a computer readable storage medium having program instructions executable by a processor to cause operations, the operations comprising:

performing a first virtual restoration of a first volume of data stored in the storage using a second volume, including configuring metadata associated with the second volume to map the second volume to the first volume as a virtual restoration of the first volume;
and
in response to a request by a host for data stored on the first volume, performing a physical restoration of data of the first volume using the second volume, including transferring data to the second volume from the first volume to which the second volume is mapped by the virtual restoration, and relabeling transferred data as second volume data instead of first volume data so that accessing data of the first volume is deferred until access to the data is requested by the host and wherein modification of data on the first volume in association with restoration of the first volume is avoided during virtual and physical restoration of the first volume.

A system for use with a host and for restoring volumes of data, comprising:

storage having a plurality of volumes of data;
a processor;
and
a computer readable storage medium having program instructions that when executed by the processor cause operations, the operations comprising:
performing a first virtual restoration of a first volume of data stored in the storage using a second volume, including configuring metadata associated with the second volume to map the second volume to the first volume as a virtual restoration of the first volume;
and
in response to a request by a host for data stored on the first volume, performing a physical restoration of data of the first volume using the second volume, including transferring data to the second volume from the first volume to which the second volume is mapped by the virtual restoration, and relabeling transferred data as second volume data instead of first volume data so that accessing data of the first volume is deferred until access to the data is requested by the host and wherein modification of data on the first volume in association with restoration of the first volume is avoided during virtual and physical restoration of the first volume.

4 more elements

A method, comprising:

performing a first virtual restoration of a first volume of data stored in storage using a second volume, including configuring metadata associated with the second volume to map the second volume to the first volume as a virtual restoration of the first volume;
and
in response to a request by a host for data stored on the first volume, performing a physical restoration of data of the first volume using the second volume, including transferring data to the second volume from the first volume to which the second volume is mapped by the virtual restoration, and relabeling transferred data as second volume data instead of first volume data so that accessing data of the first volume is deferred until access to the data is requested by the host and wherein modification of data on the first volume in association with restoration of the first volume is avoided during virtual and physical restoration of the first volume.

Dependencies are inferred from the claim text.