Method and system for automated backup copy ordering in a time zero backup copy session

A method in a data processing system for coordinating a backup copy of designated datasets stored within a plurality of storage subsystems during concurrent execution of an application, wherein said data processing system has a temporary host memory associated therewith and wherein each of said storage subsystems has storage subsystem memory associated therewith, said method comprising the steps of:

• establishing a resource manager for managing all input and output functions between said plurality of storage subsystems, said storage subsystem memories and said temporary host memory during generation of said backup copy;
• creating a session identification and a system read command utilizing said resource manager in response to a request for said backup copy;
• modifying said system read command if any of said designated datasets are initially stored in said temporary host memory;
• forming a dataset logical-to-physical storage subsystem address concordance for said designated datasets at said plurality of storage subsystems in response to said request for said backup copy;
• copying portions of said designated datasets on a scheduled or opportunistic basis from said plurality of storage subsystems and updating said address concordance in response to said copying;
• and
• processing any application initiated updates to affected uncopied portions of said designated datasets by buffering said updates, copying said affected uncopied portions of said designated datasets to said storage subsystem memory, updating said address concordance in response to said copying, and writing said updates to said affected portions of said designated datasets within said plurality of storage subsystems;
• and
• utilizing said resource manager and said altered address concordance to create a specified order backup copy of said designated datasets from said copied portions of said designated datasets without user intervention.

A data processing system for generating a backup copy of designated datasets stored within a plurality of storage subsystems during concurrent execution of an application, wherein said data processing system has a temporary host memory associated therewith and each of said storage subsystems has storage subsystem memory associated therewith, said data processing system comprising:

• means for suspending execution of said application in response to a request for said backup copy;
• means for forming a dataset logical-to-physical storage subsystem address concordance for said designated datasets;
• means for resuming execution of said application upon completion of said forming said address concordance;
• means for establishing a resource manager for managing all input and output functions between said plurality of storage subsystems, said storage subsystem memories and said temporary host memory during generation of said backup copy;
• means for copying portions of said designated datasets on a scheduled or opportunistic basis from said plurality of storage subsystems and updating said address concordance in response to said copying;
• means for processing any application initiated updates to affected uncopied portions of said designated datasets by buffering said updates, copying said affected uncopied portions of said designated datasets to said storage subsystem memory, updating said address concordance in response to said copying, and writing said updates to said affected portions of said designated datasets within said plurality of storage subsystems;
• and
• means for utilizing said resource manager and said altered address concordance to create a specified order backup copy of said designated datasets from said copied portions of said designated datasets without user intervention.

A data processing system for coordinating a backup copy of designated datasets stored within a plurality of storage subsystems during concurrent execution of an application, wherein said data processing system has a temporary host memory associated therewith and wherein each of said storage subsystems has storage subsystem memory associated therewith, said data processing system comprising:

• means for establishing a resource manager for managing all input and output functions between said plurality of storage subsystems, said storage subsystem memories and said temporary host memory during generation of said backup copy;
• means for creating a session identification and a system read command utilizing said resource manager in response to a request for said backup copy;
• means for modifying said system read command if any of said designated datasets are initially stored in said temporary host memory;
• means for forming a dataset logical-to-physical storage subsystem address concordance for said designated datasets at said plurality of storage subsystems in response to said request for said backup copy;
• means for copying portions of said designated datasets on a scheduled or opportunistic basis from said plurality of storage subsystems and updating said address concordance in response to said copying;
• and
• means for processing any application initiated updates to affected uncopied portions of said designated datasets by buffering said updates, copying said affected uncopied portions of said designated datasets to said storage subsystem memory, updating said address concordance in response to said copying, and writing said updates to said affected portions of said designated datasets within said plurality of storage subsystems;
• and
• means for utilizing said resource manager and said altered address concordance to create a specified order backup copy of said designated datasets from said copied portions of said designated datasets without user intervention.