Suspend-resume of virtual machines using de-duplication

Patent metadata

Field	Value
Publication number	US-9104469-B2
Application number	US-201313914931-A
Country	US
Kind code	B2
Filing date	Jun 11, 2013
Priority date	Jun 11, 2013
Publication date	Aug 11, 2015
Grant date	Aug 11, 2015

Abstract

A technique for data de-duplication is applied to suspend and resume operations for virtual machines (VMs) to reduce the time needed to suspend or resume a virtual machine and store the suspended VMs in a space-efficient and time-efficient manner. A VM's state is serialized and written to disk in the form of key values that are used to retrieve data from a key-data map. The key-data map stores unique data blocks for suspended VM images. The key-data map can be stored in a solid-state drive to further reduce latency and access time.

First claim

What is claimed is:

1. A method for suspending a virtual machine executing in a physical host, the method comprising:
suspending execution of a virtual machine having data stored in a virtual memory space allocated for the virtual machine;
dividing the data in the virtual memory space into a plurality of blocks;
determining a plurality of keys corresponding to data in the plurality of blocks;
storing the plurality of keys in a key-data map that associates each of the plurali…

Assignees

• Vmware Inc

Inventors

• Bajaj Rupesh
• Bagchi Abhishek
• Bhatti Satbir Singh
• Rohilla Jitender
• Sharma Mukul

Classifications

• G06F9/4856

  Physics · mapped topic

• G06F11/1453

  Physics · mapped topic

• G06F9/461 Primary

  Physics · mapped topic

• G06F9/45558

  Physics · mapped topic

• G06F2009/45575

  Physics · mapped topic