Improving data availability during failure detection and recovery processing in a shared resource system
US8046633B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2009 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Dec 17, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/825
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for managing shared resources is disclosed. The system includes a primary coherency processing unit which processes lock requests from a plurality of data processing hosts, the primary coherency processing unit also storing a first current lock state information for the plurality of data processing hosts, the first current lock state information including a plurality of locks held by the plurality of data processing hosts. The system further includes a standby coherency processing unit storing fewer locks than the primary coherency processing unit, the locks stored by the standby coherency processing unit being a subset of locks included in the first current lock state information, the standby coherency unit configured to perform a plurality of activities of the primary coherency processing unit using the subset of locks in response to a failure of the primary coherency processing unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.