DATA SET MANAGEMENT

摘要

A method of and system for managing a data set stored on units of storage space in a storage facility is disclosed. The method and system may include identifying prospect extents of the data set. The prospect extents may include a first prospect extent stored on a first unit of storage space and a second prospect extent stored on a second unit of storage space. The method and system may include congregating the first prospect extent and the second prospect extent on a destination unit of storage space in the storage facility.

主权项

1. A computer program product, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a computer to cause the computer to:
select a data set; select a first set of extents in the data set for congregation, wherein each extent in the first set of extents is selected based on being below an extent size threshold; select a second set of extents in the data set, wherein each extent in the second set of extents is selected to remain at an address on a unit of storage space based on being above the extent size threshold; and congregate the first set of extents, the congregating comprising:
moving a first extent in the first set of extents from a source unit of storage space to a destination unit of storage space; andmaintaining the addresses of the extents in the second set of extents.