System and method for converting a physical disk to a virtual disk

• US 9,311,313 B2
• Filed: 09/23/2014
• Issued: 04/12/2016
• Est. Priority Date: 04/11/2003
• Status: Expired due to Term

• Current Assignee: VMware, Inc. (Broadcom, Inc.)
• Original Assignee: VMware, Inc. (Broadcom, Inc.)
• Inventors: Le, Bich Cau, Khandekar, Dilip, Raghuram, Sirishkumar
• Primary Examiner(s): Chen, Qing
• Application Number:
  US14/493,680
• Publication Number:
  US 20150012570A1
• Time in Patent Office: 567 Days
• Field of Search: 717174-178, 713/1, 713/2, 713/100, 718/1
• US Class Current: 1/1
• 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 method for converting a disk of a physical computer into a virtual disk for use by a virtual machine is described. Contents of the disk of the physical computer are copied into an image file, wherein the image file has a different sector-by-sector organization of the contents than the disk but a logically equivalent file system organization. Hardware configuration information from the image file is then extracted, wherein the hardware configuration information relates to hardware of the physical computer and, based on a comparison of the extracted hardware configuration information and a virtual hardware configuration of the virtual machine, hardware dependent files in the image file are replaced with substitute files that are compatible with the virtual hardware configuration of the virtual machine.

Claims

1. A method for converting a physical disk into a virtual disk file for use by a virtual machine comprising:

receiving user inputs specifying a file name and a path for the virtual disk file;

copying contents of the physical disk including files of an operating system and network parameters into the virtual disk file;

modifying the network parameters that have been copied into the virtual disk file; and

booting the virtual machine from the virtual disk file,

wherein, upon receiving a command to convert the physical disk into the virtual disk file, the contents of the physical disk are not modified prior to said copying.

2. The method of claim 1, further comprising:

prior to said copying, checking to see if the contents of the physical disk includes files of an operating system.

3. The method of claim 1, further comprising:

prior to said copying, shutting down applications that place locks on files stored in the physical disk.

4. The method of claim 1, further comprising:

modifying a configuration file of the virtual machine to identify the virtual disk file as a virtual disk for the virtual machine.

5. The method of claim 1, wherein the virtual disk file implements a sector-based image file format.

6. The method of claim 5, wherein the virtual disk file is a sparse file.

7. A non-transitory computer readable medium storing instructions that are executed in a computer system to cause the computer system to carry out a method for converting a physical disk into a virtual disk file for use by a virtual machine, said method comprising:

receiving user inputs specifying a file name and a path for the virtual disk file;

shutting down applications that place locks on files stored in the physical disk prior to copying contents of the physical disk, and then copying the contents of the physical disk including files of an operating system and network parameters into the virtual disk file;

modifying the network parameters that have been copied into the virtual disk file; and

booting the virtual machine from the virtual disk file.

8. The non-transitory computer readable medium of claim 7, wherein the method further comprises:

prior to said copying, checking to see if the contents of the physical disk includes files of an operating system.

9. The non-transitory computer readable medium of claim 7, wherein the method further comprises:

modifying a configuration file of the virtual machine to identify the virtual disk file as a virtual disk for the virtual machine.

10. The non-transitory computer readable medium of claim 7, wherein the virtual disk file implements a sector-based image file format.

11. The non-transitory computer readable medium of claim 10, wherein the virtual disk file is a sparse file.

12. The non-transitory computer readable medium of claim 7, wherein, upon receiving a command to convert the physical disk into the virtual disk file, the contents of the physical disk are not modified prior to said copying.

13. A computer system for converting a physical disk into a virtual disk file for use by a virtual machine, comprising:

a storage device; and

a processor programmed to;

store user inputs specifying a file name and a path for the virtual disk file,

shut down applications that place locks on files stored in the storage device prior to copying contents of the storage device, and then copy the contents of the storage device including files of an operating system and network parameters into the virtual disk file,

modify the network parameters that have been copied into the virtual disk file, and

boot the virtual machine from the virtual disk file.

14. The computer system of claim 13, wherein the processor is programmed to check to see if the contents of the storage device includes files of an operating system prior to copying the contents of the storage device.

15. The computer system of claim 13, wherein the processor is programmed to modify a configuration file of the virtual machine to identify the virtual disk file as a virtual disk for the virtual machine.

16. The computer system of claim 13, wherein the virtual disk file implements a sector-based image file format.

17. The computer system of claim 16, wherein the virtual disk file is a sparse file.