Virtual restructuring for patching compressed disk images
US11914983B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2022 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Sep 6, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/44505
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Aspects and features include using a virtual disk image to improve computational performance when applying a software patch. Compressed extents within a stored disk image are detected. The compressed extents are virtually reordered to form compressed forks within a virtual disk image and the compressed forks are selected for decompression based on code to be patched. A decompressed fork with the patch is virtually written to the same or another virtual disk image as an updated fork, and the virtual disk image is used to write to storage, either to overwrite the same stored disk image or to produce an updated, compressed disk image. In some examples, the virtual disk image is validated prior to writing to the compressed image by comparing an output hash from the compressed disk image with a known hash to validate the virtual disk image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.