System and method for restoring a single file from a snapshot
US7051050B2 · kind B2 · utility
154Cited by
13References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2002 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Aug 11, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a system and method for restoring a single file from a snapshot without the need to copy every individual block or inode from the snapshot. A file restore process duplicates the inode of a file within the active file system and performs a reconciliation process between the blocks of the twin inode and the snapshot inode. If the file does not exist within the active file system, a new buffer tree is created that points to the data blocks stored in the snapshot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.