US 9,003,142 B2 · Volume swapping of point-in-time read-only target volumes

Abstract

A mechanism is provided for adding point-in-time copy relationships to a data processing system. A request is received to establish a first point-in-time copy relationship. Responsive to determining that a first target of the first point-in-time copy relationship is target write inhibited, that a source of the first point-in-time copy relationship is a source of a first continuous synchronous copy relationship, that a target of the first continuous synchronous copy relationship is part of a second point-in-time copy relationship, and that the source of the first point-in-time copy relationship is part of a volume swap configuration, a volume swap relationship is added between the first point-in-time target volume and the second point-in-time target volume to the volume swap configuration. Both point-in-time copy relationships are established and any continuous synchronous copy requirements of the volume swap relationship between the first point-in-time target volume and the second point-in-time target volume are disabled.

Claims20

Dependent claims

A method, in a data processing system, for adding point-in-time copy relationships to the data processing system, the method comprising:

establishing a volume swap relationship between a first point-in-time target volume and a second point-in-time target volume, wherein the first point-in-time target volume is a candidate for a non-continuous synchronous copy volume swap relationship by:
establishing a first point-in-time copy relationship for the first point-in-time target volume in the data processing system;
and
establishing a second point-in-time copy relationship for the second point-in-time target volume in the data processing system;
and
disabling any continuous synchronous copy requirements of the volume swap relationship between the first point-in-time target volume and the second point-in-time target volume.

3 more elements

An apparatus, comprising:

a processor;
and
a memory coupled to the processor, wherein the memory comprises instructions which, when executed by the processor, cause the processor to:
establish a volume swap relationship between a first point-in-time target volume and a second point-in-time target volume, wherein the first point-in-time target volume is a candidate for a non-continuous synchronous copy volume swap relationship by:
establishing the first point-in-time copy relationship for the first point-in-time target volume in the data processing system;
and
establishing second point-in-time copy relationship for the second point-in-time target volume in the data processing system;
and
disable any continuous synchronous copy requirements of the volume swap relationship between the first point-in-time target volume and the second point-in-time target volume.

6 more elements

A computer program product comprising a computer readable storage medium having a computer readable program stored therein, wherein the computer readable program, when executed on a computing device, causes the computing device to:

establish a volume swap relationship between a first point-in-time target volume and a second point-in-time target volume, wherein the first point-in-time target volume is a candidate for a non-continuous synchronous copy volume swap relationship by:
establishing the first point-in-time copy relationship for the first point-in-time target volume in the data processing system;
and
establishing second point-in-time copy relationship for the second point-in-time target volume in the data processing system;
and
disable any continuous synchronous copy requirements of the volume swap relationship between the first point-in-time target volume and the second point-in-time target volume.

3 more elements

Dependencies are inferred from the claim text.

Volume swapping of point-in-time read-only target volumes

Life of this patent

Volume swapping of point-in-time read-only target volumes

Life of this patent

Abstract

Claims20