Instant virtual copy technique with expedited creation of backup dataset inventory from source dataset inventory

摘要

A method of copying a body of source data is shown, with rapid creation of an a backup dataset inventory. While write operations to the source data are temporarily suspended, a backup manager conducts an instant virtual copy of the source data creating a backup copy. Also while write operations are being suspended, the backup manager captures contents of a source dataset inventory cross-referencing datasets in the source data and locations in the body of source data where the datasets are stored. After the copy operation completes and writes to the source data resume, the backup manager adds the captured backup contents to a backup dataset inventory cross-referencing datasets in the backup copy and locations where the backup copy datasets are stored in the backup copy.