Top-down control of multiple layer aggregation logical volume management data and boot record
US6711591B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2000 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Oct 26, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99953
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for control of data and boot records associated with multi-layer logical volumes allows the logical volume data area containing the fake EBR to be deterministically and efficiently accessed by using a “top down” control methodology. Control of the logical volume manager (“LVM”) data area is distributed. An LVM data area is placed on each aggregate as well as on each partition, and the fake EBR is placed in the LVM data area of the topmost aggregate. The topmost aggregator controls access to the fake EBR, and only this aggregator must provide API functionality to access the fake EBR. This allows the fake EBR to be found and accessed only by new software applications which are “aware” of the fake EBR, while allowing legacy aggregators to continue to function correctly and allowing legacy software applications to continue to interwork with legacy aggregators through their unchanged APIs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.