Patent · US Active

Virtual machine file management using file-level snapshots

US12229577B2 · kind B2 · utility

0Cited by

9References

20Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Da Long Wang · Hangzhou City, CN
Qin Yue Chen · Shanghai, CN
Xue Feng · Lexington, US
Yang Liang · Beijing, CN
Yang Feng · Frederick, US
Bin Xiong · Hubei, CN

Key dates

Filing date	Apr 23, 2021
Grant date	Feb 18, 2025
Priority date	—
Expiry date	Aug 9, 2043

Classification

Technology area (CPC G)Physics
CPC primaryG06F2201/84
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

VM file management includes detecting a user request to access to a virtual machine (VM) and searching a pre-defined list to determine whether the user requesting access is identified on the list. If so, a file-level snapshot is generated prior to enabling modification of a VM file by the user. The file-level snapshot includes a user attribute and is added as the top layer of a stack. The user attribute indicates a role of the user for whom the file-level snapshot is created. Each layer of the stack contains one or more other file-level snapshots. The VM file is written in the file's entirety to the snapshot in response to the user modifying the VM file. Based on the user attribute of each snapshot, a set of snapshots is selected from the stack, and the VM is modified by merging the VM files belonging to the set of snapshots selected.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.