File cloning across different filesets
US8650158B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2010 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Feb 25, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/40
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments include a computer program product and an apparatus for cloning files across different filesets and maintaining the clone files. After a clone file is created from a file, a write request targeting the clone file can be handled. It is determined that the write request indicates the clone file that was cloned from a file in a first fileset. The clone file is of a second fileset and a clustered file system comprises the first fileset and the second fileset. A data block of the clone file affected by the write request is determined. It is then determined that the data block at a current location cannot be modified. The write request is implemented with respect to the data block at a different location. It is indicated that the data block at the different location can be modified for subsequent write requests that indicate the clone file.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.