Computer image capture, customization and deployment

• US 7,356,679 B1
• Filed: 10/01/2004
• Issued: 04/08/2008
• Est. Priority Date: 04/11/2003
• Status: Active Grant

• Current Assignee: Vmware LLC (Broadcom, Inc.)
• Original Assignee: VMware, Inc. (Broadcom, Inc.)
• Inventors: Raghuram, Sirishkumar, Le, Bich C., Khandekar, Dilip
• Primary Examiner(s): DU, THUAN N
• Application Number:
  US10/956,691
• Time in Patent Office: 1,285 Days
• Field of Search: 713/1, 713/100, 717/176
• US Class Current: 713/1
• CPC Class Codes: G06F 16/10 File systems; File servers
• CPC Class Codes: G06F 16/116 Details of conversion of file system types or formats
• CPC Class Codes: G06F 16/166 File name conversion
• CPC Class Codes: G06F 16/188 Virtual file systems
• CPC Class Codes: G06F 2009/45562 Creating, deleting, cloning virtual machine instances
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects

Abstract

A source image of the hardware and software configuration of a source computer, including the state of at least one source disk, is automatically captured. The source computer may remain unprepared and requires no program for facilitating computer cloning and reconfiguration. The source image is automatically analyzed and the hardware configuration of a destination computer is determined. The source image is modified as needed for either compatibility with the destination computer, or for customization, and after possible modification the source image is deployed on the destination computer. Either or both of the source and destination computers may be virtual machines.

Claims

1. A method of deploying a system disk from a first machine to a second machine, the method comprising:

reading a source image from a data storage device, the source image containing hardware configuration information and installed software, the installed software including at least an installed operating system, the installed operating system being configured to be executed by the first machine;

creating a destination image;

mounting the destination image in a computer system, the destination image being mounted in loop-back mode using a destination loop-back driver such that the destination image functions as a simulated local destination disk, and appears as a physical disk to the operating system of the computer system;

copying the files and directories from the source image to the destination image;

mounting a disk image defined by the logical image onto the second machine.

2. The method of claim 1, wherein:

the first machine is a physical computer system;

the source image is defined by data present on a physical disk of the first machine;

the second machine is a virtual machine, the virtual machine comprising a software abstraction of a physical computer system, the mounting of the logical image comprising creating a full size copy of the logical image to create a modified source image, and attaching the modified source image to the virtual machine; and

the method further comprises modifying the destination image so that the installed operating system is configured to be executed by the second machine.

3. The method of claim 2, further comprising modifying the destination image to introduce an installed application to the destination image, wherein the installed application includes files and configuration settings.

4. The method of claim 3, wherein the configuration settings are contained in a registry maintained by the installed operating system.

5. The method of claim 2, wherein the reading of the source image further comprises:

booting the first machine with a secondary operating system, the secondary operating system being supplied by one of a removable medium or over a network;

launching an imaging client in the first machine, the imaging client having read and write access of the physical disk of the first machine; and

installing a source loop-back driver on the computer, the source loop-back driver forwarding in/out (I/O) requests from an operating system running on the server computer to the imaging client, the I/O requests comprising sector-level addresses for reading from sectors and writing to sectors.

6. The method of claim 5, further comprising a network loop-back adapter interposed between the source loop-back driver and a the network, the network loop-back adapter being configured to receive the I/O requests from the source loop-back driver, translate the I/O requests into network requests, and sends the network requests to the imaging client.

7. The method of claim 5, wherein the imaging client does not contain a decoder for translating requests for directory or file to sector read requests.

8. The method of claim 2, further comprising:

identifying the virtual machine product and version providing the virtual machine;

retrieving from a database hardware configuration information corresponding to the virtual machine product; and

modifying the destination image using the hardware configuration information to configure the installed software to operate with the virtual machine.

9. The method of claim 1, further comprising:

identifying the second machine;

retrieving destination hardware configuration information of the second machine from a database;

modifying the destination image using the hardware configuration information to configure the installed software to operate with the second machine.

10. The method of claim 1, wherein the second machine is a virtual machine and the destination image is a virtual disk with a capacity at least as large as the source image, the mounting of the disk image onto the second machine comprising attaching the destination image to the virtual machine to form a virtual machine with an active disk image.

11. The method of claim 1, wherein the second machine is a physical computer and the destination loop-back driver is configured to transmit the write requests to an imaging client executing on the second machine, the imaging client being configured to execute the write request to a physical disk of to the second machine, the mounting of the disk image onto the second machine comprising copying the destination image to the physical disk of the second machine using the destination loop-back driver.

12. The method of claim 1, wherein the first machine is a virtual machine, the source image being a file containing an image of a virtual disk of the first machine.