Synchronization and customization of a clone computer

• US 7,941,470 B2
• Filed: 03/28/2008
• Issued: 05/10/2011
• Est. Priority Date: 03/29/2007
• Status: Active Grant

• Current Assignee: Vmware LLC (Broadcom, Inc.)
• Original Assignee: VMware, Inc. (Broadcom, Inc.)
• Inventors: Zheng, Yufeng, Raghuram, Sirish, Le, Bich Cau, Feng, Ji
• Primary Examiner(s): VU, VIET D
• Application Number:
  US12/058,269
• Publication Number:
  US 20080244028A1
• Time in Patent Office: 1,138 Days
• Field of Search: 709/208, 709/209, 709/211, 709/223, 709/224, 709/248, 719/325
• US Class Current: 708/208
• CPC Class Codes: G06F 11/1471 involving logging of persistent data for recovery
• CPC Class Codes: G06F 3/0607 by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
• CPC Class Codes: G06F 3/065 Replication mechanisms
• CPC Class Codes: G06F 3/0674 Disk device
• CPC Class Codes: G06F 8/63 Image based installation; Cloning; Build to order

Abstract

A computer implemented method for maintaining synchronization between a master computer disk and a clone disk that includes cloning the clone disk from the master computer disk, the clone disk having a customization portion; and customizing the customization portion with information relevant to a clone computer that uses the clone disk.

Claims

1. A computer implemented method for maintaining synchronization between a master computer disk and a clone disk that comprises:

maintaining revisions of the master computer disk, wherein one of the revisions includes configurations desirable for a clone group of which a computer utilizing the clone disk is a member;

associating the revision to the clone group to enable creation of computers in the clone group based on the revision;

creating the clone disk by requesting a snapshot of the revision of the master computer disk; and

applying customizations to the clone disk specific to the computer utilizing the clone disk, wherein a representation of the customizations is stored separate from the revisions of the master computer disk and in association with an identity of the computer.

2. The computer implemented method as recited in claim 1 wherein the step of associating the revision utilizes a fixed anchor that does not change without administrator input.

3. The computer implemented method as recited in claim 1 wherein the step of associating the revision utilizes a floating anchor that automatically changes association of the clone group to a subsequently created revision representing a new up-to-date version of the revision.

4. The computer implemented method as recited in claim 1 wherein the customizations include one or more of:

host name, IP address(es), security identifiers, authentication domain membership, software license keys, and user selected preferences.

5. The computer implemented method as recited in claim 1 wherein applying the customizations occurs while the computer utilizing the clone disk is offline.

6. The computer implemented method as recited in claim 1 wherein applying the customizations occurs during a booting process by the computer utilizing the clone disk.

7. The computer implemented method as recited in claim 6 wherein applying the customizations further comprises running a script installed in the computer for accessing the stored representation of the customizations.

8. A master/slave synchronization maintainer comprising:

a template receiver for maintaining revisions of a master computer disk, wherein one of the revisions includes configurations desirable for a clone group of which a computer utilizing a clone disk is a member;

a clone generator coupled with said template receiver, said clone generator for associating the revision to the clone group to enable creation of computers in the clone group based on the revision and for creating the clone disk from the master computer disk; and

a clone customizer coupled with said clone generator, said clone customizer for applying customizations to the clone disk specific to the computer utilizing the clone disk, wherein a representation of the customizations is stored separate from the revisions of the master computer disk and in association with an identity of the computer.

9. The master/slave synchronization maintainer as recited in claim 8 wherein the clone generator utilizes a fixed anchor that does not change without administrator input in order to associate the revision to the clone group.

10. The master/slave synchronization maintainer as recited in claim 8 wherein, in order to associate the revision to the clone group, the clone generator utilizes a floating anchor that automatically changes association of the clone group to a subsequently created revision representing a new up-to-date version of the revision.

11. The master/slave synchronization maintainer as recited in claim 8 wherein said customizations include customizable properties selected from the group consisting of:

host name, IP address(es), security identifiers, authentication domain membership, software license keys, and user selected preferences.

12. The master/slave synchronization maintainer as recited in claim 8 wherein a snapshot function is utilized by said clone generator to create the clone disk.

13. The master/slave synchronization maintainer as recited in claim 8 wherein at least a portion of applying the customizations by the clone customizer occurs while the computer utilizing the clone disk is online.

14. A non-transitory computer-usable medium having computer-readable program code embodied therein for causing a method for maintaining synchronization between a master computer disk and a clone disk, said method comprising:

maintaining revisions of the master computer disk, wherein one of the revisions includes configurations desirable for a clone group of which a computer utilizing the clone disk is a member;

associating the revision to the clone group to enable creation of computers in the clone group based on the revision;

creating the clone disk by requesting a snapshot of the revision of the master computer disk; and

applying customizations to the clone disk specific to the computer utilizing the clone disk, wherein a representation of the customizations is stored separate from the revisions of the master computer disk and in association with an identity of the computer.

15. The non-transitory computer-usable medium having computer-readable program code embodied therein as recited in claim 14 wherein the step of associating the revision utilizes an anchor that is selected from the group of anchors including a fixed anchor that does not change without administrator input and a floating anchor that automatically changes association of the clone group to a subsequently created revision representing a new up-to-date version of the revision.

16. The non-transitory computer-usable medium having computer-readable program code embodied therein as recited in claim 14 wherein said customizations include customizable properties selected from the group consisting of:

host name, IP address(es), security identifiers, authentication domain membership, software license keys, and user selected preferences.

17. The non-transitory computer-usable medium having computer-readable program code embodied therein as recited in claim 14 wherein at least a portion of applying the customizations occurs while the computer utilizing the clone disk is online.

18. A computer implemented method for maintaining synchronization between a master computer disk and a clone disk that comprises:

cloning the clone disk from said master computer disk, the clone disk having a customization portion; and

customizing the customization portion with information relevant to a clone computer that uses the clone disk by, when the clone computer is powered on, waiting for software from the clone disk to load and sending customization information to the software loaded from the clone disk, whereby the clone computer modifies its configuration files.

19. A master/slave synchronization maintainer comprising:

a template receiver for receiving a master computer disk template;

a clone generator coupled with said template receiver, said clone generator for cloning at least one slave disk from said master computer disk;

a clone customizer coupled with said clone generator, said clone customizer for providing at least one customization portion of said at least one slave disk clone; and

a clone synchronizer coupled with said clone customizer, said clone synchronizer for synchronizing said slave disk to said master computing disk while maintaining said at least one customization portion of said slave disk such that said slave disk remains a clone with respect to said master computer disk while also retaining said at least one customization portion which is distinct from said master computing disk, wherein said synchronizing of said slave disk with respect to said master computing disk provides a go-offline command to a slave software program running on a slave computer loaded from said slave disk after a pre-determined time period has passed since synchronization was available and said slave disk has been offline, and wherein a power down command is provided to said slave computer coupled with said slave disk if said slave software program does not respond to said go-offline command in a pre-determined period of time.

20. A non-transitory computer-usable medium having computer-readable program code embodied therein for causing a method for maintaining synchronization between a master computer disk and a customized slave disk, said method comprising:

receiving a master computer disk;

utilizing a snapshot function to clone at least one slave disk from said master computer disk;

providing at least one customization portion to said at least one slave disk clone;

tracking changes to said master computing disk;

providing an anchor for synchronizing said slave disk to said master computing disk when said changes to said master computing disk are recognized without requiring an agent; and

synchronizing said slave disk to said master computing disk when said slave disk is offline while maintaining said at least one customization portion of said slave disk such that said slave disk remains a clone with respect to said master computer disk while also retaining said at least one customization portion which is distinct from said master computing disk, wherein said synchronizing further comprises providing a go offline command to a slave software program on a slave computer loaded from said slave disk after a pre-determined time period has passed since synchronization was available and said slave disk has not been offline, and providing a power down command to said slave computer coupled with said slave disk if said slave software program does not respond to said go-offline command in a pre-determined period of time.