Maintenance of persistent data using bitmaps

Details Maintenance of persistent data using bitmaps Maintenance of persistent data using bitmaps

2007-10-23

2007-10-23

Elmore, Reba I. (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S170000

Reexamination Certificate

active

10898603

ABSTRACT:
A system is employed to maintain persistent operation information for implementation on persistent data. Bitmaps are created to track outstanding persistent operations. Should a volume of information became inaccessible, the bitmaps are evaluated to determine if outstanding persistent operations exist and, if so, these outstanding operations are performed before the volume is integrated into the logical memory space. Additionally, operation-in-progress bitmaps are utilized to indicate that persistent data within a volume is being modified.

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