Time based checkpoint restart
US10049012B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 2016 |
| Grant date | Aug 14, 2018 |
| Priority date | — |
| Expiry date | Aug 3, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one example method, a group of directories is backed, and then a failure of an emitter is experienced. A respective saveset is created for each of several dynamic parallel save streams, where each saveset is associated with one or more emitters. Next, a path checkpoint ‘P’ is created using the smallest emitter, and a time checkpoint ‘S’ is created using an earliest savetime of all of the savesets. A retry is started using the time checkpoint ‘S’ and the path checkpoint ‘P’. One or more items are identified for backup and then sent to a director to be backed up. Next, savesets are generated for the backed up items. Finally, the generated savesets are combined with the savesets of the dynamic parallel save streams to form a global image for all save streams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.