Directory snapshots based on directory level inode virtualization
US12001393B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2021 |
| Grant date | Jun 4, 2024 |
| Priority date | — |
| Expiry date | Oct 11, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/188
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described is a technology that facilitates directory level snapshots at any level of a filesystem's namespace. A directory inode mapping file associates a first directory's virtual inode number(s) with real inode number(s). A snapshot of the first directory creates a second directory with a second directory inode mapping file copied from the first directory inode mapping file, thereby sharing the real inode data structure(s) of the first directory. In the event that one of the directories is to be modified, the directory real inode is split to provide a new directory real inode file for the to-be-modified directory, with the modification after the split.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.