Technique for accelerating the creation of a point in time prepresentation of a virtual file system
US7424497B1 · kind B1 · utility
10Cited by
34References
52Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2005 |
| Grant date | Sep 9, 2008 |
| Priority date | — |
| Expiry date | May 23, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99955
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique for accelerating the creation of a hyperclone of a virtual file system. A hyperclone inode is copied from the base inode. Each indirect and direct block referenced by the base inode is also copied and the block pointers within the base inode are set to reference the copied direct data blocks. A CTW bit is set within each copied block that alerts the file system that the reference indirect or direct block is not to be deallocated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.