Software, systems, and methods for enhanced replication within virtual machine environments

• US 9,665,582 B2
• Filed: 08/04/2011
• Issued: 05/30/2017
• Est. Priority Date: 08/04/2010
• Status: Active Grant

• Current Assignee: Quantum Corporation (Chi Ko Investment Co., Ltd.)
• Original Assignee: Quantum Corporation (Chi Ko Investment Co., Ltd.)
• Inventors: Wade, Gregory L., Haile, J. Mitchell
• Primary Examiner(s): Herndon, Heather
• Assistant Examiner(s): DAVANLOU, SOHEILA
• Application Number:
  US13/198,123
• Publication Number:
  US 20120059794A1
• Time in Patent Office: 2,126 Days
• Field of Search: 707626, 707639, 707E17008, 707E17014
• CPC Class Codes: G06F 16/13 File access structures, e.g. distributed indices arrangements of input from, or output to, record carriers G06F3/06
• CPC Class Codes: G06F 16/188 Virtual file systems

Abstract

Software, systems, and methods are disclosed herein for enhanced updating of replica storage volumes within virtual machine environments. A first group of data blocks of a plurality of data blocks on an underlying storage volume that have changed are identified. A second group of data blocks of the first group of data blocks that are live are identified. Changed data items associated with the second group of data blocks are identified. An ancillary process is initiated on the changed data items. An update of the replica of the target storage volume with the second group of data blocks is also initiated.

Claims

1. A non-transitory computer-readable medium having stored thereon program instructions for updating a replica of a target storage volume associated with a plurality of data blocks on an underlying storage volume that underlies the target storage volume, wherein the program instructions, when executed by a data control system, direct the data control system to:

responsive to an instruction to update the replica, identify a first group of data blocks of the plurality of data blocks on the underlying storage volume that have changed;

identify a second group of data blocks of the first group of data blocks that are live;

identify changed data items included in the target storage volume that are associated with the second group of data blocks;

initiate an ancillary process on the changed data items; and

initiate an update of the replica of the target storage volume with the second group of data blocks.

2. The non-transitory computer-readable medium of claim 1 wherein the ancillary process comprises a virus scan, and wherein the update of the replica is stopped if the results indicate that that at least one of the changed data items is not clean.

3. The non-transitory computer-readable medium of claim 1 wherein the ancillary process comprises a content check, and wherein the update of the replica is stopped if the results indicate that that at least one of the data items includes content that should not be included in the update according to a content policy.

4. The non-transitory computer-readable medium of claim 1, wherein the second group of data blocks comprises a snapshot of the target storage volume and the replica of the target storage volume is returned to a previous state in response to results of the ancillary process.

5. The non-transitory computer-readable medium of claim 1 wherein the update of the replica comprises a transfer of the second group of data blocks to a replica virtual machine environment.

6. The non-transitory computer-readable medium of claim 1, wherein the update of the replica of the target storage volume includes a transfer of the second group of data blocks to a second underlying storage volume and omission of data blocks not in the first group of data blocks or the second group of data blocks from the transfer.

7. The non-transitory computer-readable medium of claim 1 wherein the underlying storage volume comprises a virtual disk file containing a virtual machine, and wherein the target storage volume comprises a virtual drive within the virtual machine.

8. A data control system for updating a replica of a target storage volume associated with a plurality of data blocks on an underlying storage volume that underlies the target storage volume, the data control system comprising:

an interface configured to receive an instruction to update the replica;

a processing system comprising processing circuitry configured to;

identify a first group of data blocks of the plurality of data blocks on the underlying storage volume that have changed;

identify a second group of data blocks of the first group of data blocks that are live;

identify changed data items included in the target storage volume that are associated with the second group of data blocks;

initiate an ancillary process on the changed data items; and

initiate an update of the replica of the target storage volume with the second group of data blocks.

9. The data control system of claim 8 wherein the ancillary process comprises a virus scan, and wherein the update of the replica is stopped if the results indicate that that at least one of the changed data items is not clean.

10. The data control system of claim 8 wherein the update of the replica comprises a transfer of the second group of data blocks to a replica virtual machine environment.

11. The data control system of claim 8, wherein the second group of data blocks comprises a snapshot of the target storage volume and the replica of the target storage volume is returned to a previous state in response to results of the ancillary process.

12. The data control system of claim 8, wherein the update of the replica of the target storage volume comprises a transfer of the second group of data blocks to a second underlying storage volume and omission of data blocks not in the first group of data blocks or the second group of data blocks from the transfer.

13. The data control system of claim 8 wherein the underlying storage volume comprises a virtual disk file containing a virtual machine, and wherein the target storage volume comprises a virtual drive within the virtual machine.

14. A method of updating a replica of a target storage volume associated with a plurality of data blocks on an underlying storage volume that underlies the target storage volume, the method comprising:

identifying a first group of data blocks of the plurality of data blocks on the underlying storage volume that have changed;

identifying a second group of data blocks of the first group of data blocks that are live;

identifying changed data items included in the target storage volume that are associated with the second group of data blocks;

initiating an ancillary process on the changed data items; and

initiating an update of the replica of the target storage volume with the second group of data blocks.

15. The method of claim 14 wherein the ancillary process comprises at least a one of virus scan, a content check, and a malware detection process.

16. The method of claim 14 comprising preventing an inclusion of at least one of the changed data items in the update of the replica based on results of the ancillary process.

17. The method of claim 14 wherein the update of the replica comprises a transfer of the second group of data blocks to a replica virtual machine environment.

18. The method of claim 14, wherein the second group of data blocks comprises a snapshot of the target storage volume and the replica of the target storage volume is returned to a previous state in response to results of the ancillary process.

19. The method of claim 14, wherein the update of the replica of the target storage volume comprises a transfer of the second group of data blocks to a second underlying storage volume and omission of data blocks not in the first group of data blocks or the second group of data blocks from the transfer.

20. The method of claim 14 wherein the underlying storage volume comprises a virtual disk file containing a virtual machine, and wherein the target storage volume comprises a virtual drive within the virtual machine.