Method using a master node to control I/O fabric configuration in a multi-host environment
US7506094B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2008 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Jun 9, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4022
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method is directed to use of a master root node, in a distributed computer system provided with multiple root nodes, to control the configuration of routings through an I/O switched-fabric. One of the root nodes is designated as the master root node or PCI Configuration Manager (PCM), and is operable to carry out the configuration while each of the other root nodes remains in a quiescent or inactive state. In one useful embodiment pertaining to a system of the above type, that includes multiple root nodes, PCI switches, and PCI adapters available for sharing by different root nodes, a method is provided wherein the master root node is operated to configure routings through the PCI switches. Respective routings are configured between respective root nodes and the PCI adapters, wherein each of the configured routings corresponds to only one of the root nodes. A particular root node is enabled to access each of the PCI adapters that are included in any configured routing that corresponds to the particular root node. At the same time, the master root node writes into a particular root node only the configured routings that correspond to the particular root node. Thus, the particular …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.