System and method for adapting a system configuration of a first computer system for hosting on a second computer system

• US 8,219,653 B1
• Filed: 04/09/2009
• Issued: 07/10/2012
• Est. Priority Date: 09/23/2008
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: GoGrid LLC (Apollo Global Management, Inc.)
• Inventors: Lappas, Paul, Carr, Jeffery, Keagy, John Martin
• Primary Examiner(s): Boutah, Alina N
• Assistant Examiner(s): Cooney, Adam
• Application Number:
  US12/421,611
• Time in Patent Office: 1,188 Days
• Field of Search: 709/222
• US Class Current: 709/222
• CPC Class Codes: G06F 2009/45562 Creating, deleting, cloning virtual machine instances
• CPC Class Codes: G06F 8/63 Image based installation; Cloning; Build to order
• CPC Class Codes: G06F 9/45533 Hypervisors; Virtual machine monitors
• CPC Class Codes: G06F 9/45537 Provision of facilities of other operating environments, e.g. WINE I/O emulation G06F13/105
• CPC Class Codes: G06F 9/4555 Para-virtualisation, i.e. guest operating system has to be modified
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects

Abstract

Some embodiments provide a method for a server hosting environment having several nodes. Each node is for using one or more hypervisors in order to host several configurations of several computer systems. The method receives a first configuration of a computer system. The first configuration includes an operating system that directly accesses hardware of the computer system. The method generates a second configuration that is based on the first configuration. The second configuration includes the first configuration modified to be operable on a particular hypervisor of a particular node in the several nodes. The method installs the second configuration on the particular node in order to allow the particular node to operate on the second configuration in conjunction with the particular hypervisor. The second configuration accesses a set of virtual hardware provided by the particular hypervisor.

Claims

1. For a server hosting environment comprising a plurality of nodes, each node for using one or more hypervisors in order to host a plurality of configurations of a plurality of computer systems, a method comprising:

receiving a first configuration of a computer system, said first configuration comprising an operating system that uses a source kernel that interfaces directly with hardware of the computer system;

automatically identifying a kernel that interfaces with virtual hardware provided by a particular hypervisor of a particular destination node in the plurality of nodes;

when the identified kernel is not compatible with the operating system, automatically modifying the operating system to be compatible with the identified kernel; and

installing on the particular destination node a second configuration comprising the operating system modified to use the identified kernel for interfacing with the virtual hardware provided by the particular hypervisor.

2. The method of claim 1, wherein the identified kernel used by the modified operating system of the second configuration does not directly access hardware of the particular destination node.

3. The method of claim 1, wherein modifying the operating system to be compatible with the identified kernel comprises modifying the operating system to be compatible with the particular hypervisor that provides the virtual hardware of the particular destination node.

4. The method of claim 3, wherein the particular hypervisor comprises a mapping of said virtual hardware to physical hardware of the particular destination node.

11. The method of claim 1, wherein the modification of the operating system is performed by an adaptation engine of the particular destination node.

12. The method of claim 1 further comprising storing the second configuration in a library of computer system configurations.

13. The method of claim 1, wherein the virtual hardware interfaced by the identified kernel of the second interface is a first set of virtual hardware, wherein a third configuration concurrently operates on the particular destination node and accesses a second, different set of virtual hardware provided by the particular hypervisor that is different from the first set of virtual hardware.

14. The method of claim 13, wherein the third configuration is based on a fourth configuration of a second, different computer system, wherein the third configuration comprises an operating system unmodified from the fourth configuration.

15. The method of claim 13, wherein the third configuration comprises a same operating system as the first configuration, wherein the operating system of the third configuration uses a same kernel as the first configuration, said kernel of the third configuration for interfacing with the set of different virtual hardware provided by the particular hypervisor.

23. The method of claim 13, wherein the particular hypervisor comprises (i) a first mapping of the first set of virtual hardware to a first set of physical hardware components of the particular destination node and (ii) a second mapping of the second set of virtual hardware to a second set of physical hardware components of the particular destination node, wherein a first virtual hardware component of the first set of virtual hardware is mapped to a same particular physical hardware component to which a second, different virtual hardware component of the second set of virtual hardware is mapped.

5. A method comprising:

providing a plurality of nodes of a server hosting environment, wherein a particular node comprises a hypervisor for hosting one or more computer system configurations;

providing a set of libraries for storing component information for use in adapting configurations to be operable on different destination platforms, the set of libraries comprising;

(i) an operating system library storing different operating systems for operating on different platforms;

(ii) a kernel library storing different kernels for interfacing with different hardware on different platforms; and

(iii) a device driver library storing different device drivers that correspond to different hardware devices on different platforms, each device driver for interfacing with a particular hardware device; and

providing an adaptation module for (i) receiving a computer system configuration that directly accesses hardware of a computer system and (ii) adapting the computer system configuration using component information from one or more of the libraries in order for the computer system configuration to be operable on the hypervisor of the particular node for hosting said computer system configuration within the server hosting environment.

16. The method of claim 5 further comprising providing a hypervisor management module for identifying the particular node to receive and adapt the computer system configuration.

17. The method of claim 5 further comprising providing a module for installing the adapted computer system configuration on the particular node.

18. The method of claim 5, wherein the set of libraries further comprises:

a kernel driver API library storing different programming interfaces for generating different device drivers that are not available in the device driver library, the generated device drivers for importing into configurations to access different devices on different destination platforms; and

a development environment library storing development environments of different native versions of unmodified operating systems and kernels, the development environments for generating device drivers to access different devices on different destination platforms.

19. The method of claim 5, wherein the received computer system configuration comprises an operating system that uses a kernel to directly access the hardware of the computer system, wherein the adapted computer system configuration uses a different kernel from the kernel library in order to access a set of virtual hardware provided by the hypervisor of the particular node.

6. A computer readable storage medium storing a computer program for execution by at least one processor of a node of a server hosting environment comprising a plurality of nodes, each node for using one or more hypervisors in order to host a plurality of configurations of a plurality of computer systems, the computer program comprising:

a set of instructions for receiving a first configuration of a computer system, said first configuration comprising an operating system that directly accesses hardware of the computer system with a set of device drivers compatible with the operating system, each device driver corresponding to a hardware device of the computer system;

a set of instructions for automatically identifying, for a particular destination node in the plurality of nodes, a virtual hardware device provided by a particular hypervisor that does not correspond to any device driver in the set of device drivers of the first configuration;

a set of instructions for automatically replacing a device driver in the set of device drivers with a compatible device driver that corresponds to the virtual hardware device, said replaced device driver incompatible with the virtual hardware device; and

a set of instructions for installing on the particular destination node a second configuration comprising the operating system and the compatible device driver in order to allow the second configuration to operate on the particular destination node using the compatible device driver to access the virtual hardware device provided by said particular hypervisor.

7. The computer readable storage medium of claim 6, wherein the first configuration further comprises a first kernel that interfaces with the operating system of the first configuration and the hardware of the computer system, wherein the computer program further comprises a set of instructions for modifying the first kernel in order to generate a second kernel that interfaces with said operating system and a set of virtual hardware provided by the particular hypervisor.

8. The computer readable storage medium of claim 6, wherein the second configuration does not directly access hardware of the particular destination node.

9. The computer readable storage medium of claim 6, wherein the particular hypervisor provides a set of virtual hardware devices that each correspond to a device driver in the set of device drivers of the first configuration, wherein the second configuration further comprises the set of device drivers to allow the operating system of the second configuration to access the set of virtual hardware devices.

10. The computer readable storage medium of claim 9, wherein the particular hypervisor comprises a mapping of said set of virtual hardware devices to a set of physical hardware devices of the particular destination node.

20. The computer readable storage medium of claim 6, wherein the set of instructions for automatically replacing the device driver comprises a set of instructions for determining, among a set of device drivers stored in a library, whether any device driver in the library is compatible with the operating system and the virtual hardware device.

21. The computer readable storage medium of claim 20, wherein the set of instructions for automatically replacing the device driver further comprises a set of instructions for retrieving, when a device driver in the library is determined to be compatible, the compatible device driver from the library.

22. The computer readable storage medium of claim 20, wherein the set of instructions for automatically replacing the device driver further comprises a set of instructions for generating, when no device driver in the library is determined to be compatible, the compatible device driver using one of a kernel driver API and a development environment.