Re-TRIM of free space within VHDX
US9778860B2 · kind B2 · utility
0Cited by
26References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2012 |
| Grant date | Oct 3, 2017 |
| Priority date | — |
| Expiry date | Sep 12, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0679
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An invention is disclosed for maintaining out-of-band metadata for data. In embodiments of the invention, an upper layer of a storage stack determines that the metadata of a lower layer of that storage stack may have become out of sync. In response, the upper layer may issue a series of commands to the lower layer based on the metadata. In other embodiments of the invention, an offload-copy operation on data may also transfer out-of-band metadata so that it is applied to the data at the destination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.