Negotiated graceful takeover in a node cluster
US6920580B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2001 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Feb 26, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2046
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention is a method for operating a file server system in a cluster mode that provides for relatively rapid and reliable takeover of a failed file server in the cluster by a partner file server when the failed file server has detected a fault that will cause it to shut down. This is done by the failed file server requesting the one file server to take over its file services after detecting the fault in its operations, the one file server letting the failed file server complete existing file service requests from clients, refusing further file service requests addressed to the failed file server, and the one file server taking over by transferring file service requests to the one file server. As part of this takeover the one file server takes on the identity of the failed filer and activates network interfaces and network addresses that replicate the failed server's network addresses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.