Maintenance of persistent data using bitmaps
US7287139B2 · kind B2 · utility
8Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2004 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Oct 15, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0689
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.