Automatically committing files to be write-once-read-many in a file system
US8516022B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2012 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Jan 11, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/181
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
For automatically committing a file of a file system to a WORM committed state when the file has not been modified for a certain period of time, a file server maintains a list of file identifiers and periodically scans the list to check whether or not the certain period of time has expired for each file on the list. If so, the file is committed to the WORM state. The file server also enforces an in-place lock in response to a client request to modify or delete a file when the certain period of time is found to have expired for the file. A minimum modify time and a maximum modified time are included in each entry of the list of file identifiers in order to skip entries and to reclaim memory of entries during the periodic scan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.