Consolidating control areas

摘要

A detection module selects logically adjacent first and second control areas of a cluster. The detection module further determines that the first and second control areas satisfy a migration test wherein the first control area has free space exceeding a free threshold, the free space is at least equal to a space requirement for each second control area control interval, and the second control area has fewer control intervals than a control interval threshold. In addition, a copy module copies each second control area control interval to the first control area in response to determining that the first and second control areas satisfy the migration test.

主权项

1. A method for consolidating control areas comprising:
selecting, by use of a processor, logically adjacent first and second control areas of a cluster, wherein logically control areas have sequential key values indexing the control areas, each control area comprises control intervals, and each control interval comprises at least one logical record and free space available to store additional data; determining that the first and second control areas satisfy a migration test by the control intervals of the first control area having free space exceeding a free threshold, the free space being at least equal to a space requirement for all second control area control intervals, and the second control area having fewer control intervals than a control interval threshold; and copying each second control area control interval to the first control area in response to determining that the first and second control areas satisfy the migration test.