Presenting virtual machine backup files for block and file level restore
US10114705B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2015 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Aug 9, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/815
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments are directed to presenting virtual machine backup files for instant restore by creating a virtual volume on a local machine with files that emulate remote VM files, and setting up kernel mode interceptor hook system object and the user mode process for I/O redirection. The virtual volume created and the file extents table is passed as an input to the user mode process. The user mode process waits for events triggered by the kernel mode driver object. If the I/O is within defined file boundaries, the file is converted to relative extents and read from the remote storage node. Write requests are automatically accomplished by attaching a differencing disk created on the local machine to the last known incremental file and performing a native OS mount of that file.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.