Providing instant and distributed access to a source blob via copy-on-read blobs and link blobs
US11200253B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2019 |
| Grant date | Dec 14, 2021 |
| Priority date | — |
| Expiry date | May 31, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/2272
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods, systems, apparatuses, and computer program products are provided that enable immediate access to data associated with a source blob. The foregoing is achieved by creating a copy-on-read blob based on the source blob and a link blob based on the copy-on-read blob for each virtual machine to be deployed. When creating the copy-on-read blob, the source blob is not copied. Instead, data from the source blob is copied to the copy-on-read blob upon request by a virtual machine. Subsequent requests for that data are retrieved from the copy-on-read blob. Each link blob stores write data provided by its corresponding virtual machine. When a virtual machine requests data, its corresponding link blob is checked for the data. If the data is not stored therein, the copy-on-read blob is checked for the data. If the copy-on-read blob does not store the data, the data is retrieved from the source blob.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.