Optimal tracking of cluster-wide shared storage connectivity for graceful error handling
US8930762B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2012 |
| Grant date | Jan 6, 2015 |
| Priority date | — |
| Expiry date | Jul 30, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L43/062
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The tracking of cluster-wide connectivity information is optimized. I/O errors that result from failed operations in which specific nodes attempt to access shared storage are detected. The start-times of failed operations are tracked. The tracked start-times are compared to the time at which the cluster-wide connectivity information was last updated. Responsive to the results of the comparing, the cluster-wide connectivity information is updated in response only to a single I/O error that results from a single failed operation that was initiated after the update time, wherein additional errors resulting from failed operations with start-times after the update time are also detected, thereby preventing redundant updates of the cluster-wide connectivity information. The update time is set to the time at which the cluster-wide connectivity information is updated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.