Computer program product for fencing a member of a group of processes in a distributed processing environment
US6212595A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1998 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Jul 29, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/5016
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer program product for use in a distributed processing system having a plurality of nodes wherein selected nodes are fenced or unfenced from selected ones of peripheral device server nodes in a fence/unfence operation. A common memory is provided for storing a fence map listing nodes fenced from server nodes. In the fence/unfence operation, a request processing node proposes changes to the fence map, and if no node fails during the fence/unfence operation, the proposed changes are changed into committed changes. If a node fails during the fence/unfence operation, the proposed changes are erased, the previous committed changes are restored, and the fence/unfence request is removed from the process queue for processing by the request processing node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.