Lookup optimization during online file system migration
US8943019B1 · kind B1 · utility
2Cited by
15References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2011 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Apr 13, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/119
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for migrating file systems is provided. A file system migration operation copies a plurality of files from a first file system to a second file system. A request to access one of the files being migrated during the file system migration operation results in the creation of a pseudo vnode for the file being requested in the second file system. The pseudo vnode is created prior to creating a vnode for the file in the second file system. In addition, the pseudo vnode is associated with a vnode of the file at the first file system. Information identifying the pseudo vnode is then returned to the application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.