Systems and methods for managing virtual machine backups

• US 9,524,215 B1
• Filed: 07/30/2013
• Issued: 12/20/2016
• Est. Priority Date: 07/30/2013
• Status: Active Grant

• Current Assignee: Veritas Technologies, LLC (Whitehouse Group Ltd.)
• Original Assignee: Veritas Technologies, LLC (Whitehouse Group Ltd.)
• Inventors: Mahajan, Sameer, Khandelwal, Atul
• Primary Examiner(s): Chappell, Daniel C
• Application Number:
  US13/954,602
• Time in Patent Office: 1,239 Days
• US Class Current: 1/1
• CPC Class Codes: G06F 11/00 Error detection; Error correction; Monitoring error detection, correction or monitoring in information storage based on relative movement between record carrier and transducer G11B20/18; monitoring, i.e. supervising the progress of recording or reproducing G11B27/36; in static stores G11C29/00
• CPC Class Codes: G06F 11/1446 Point-in-time backing up or restoration of persistent data
• CPC Class Codes: G06F 11/1451 by selection of backup contents
• CPC Class Codes: G06F 11/1469 Backup restoration techniques
• CPC Class Codes: G06F 2201/815 Virtual
• CPC Class Codes: G06F 2201/835 Timestamp

Abstract

A computer-implemented method for managing virtual machine backups may include (1) identifying a maximum recovery point objective for a virtual machine with a virtual machine disk file on a storage device with snapshot capabilities, (2) identifying an available snapshot of the storage device that contains the virtual machine disk file, (3) determining that the snapshot'"'"'s timestamp is within the maximum recovery point objective, and (4) constructing a backup of the virtual machine using the snapshot, instead of creating the backup from the virtual machine disk file. Various other methods, systems, and computer-readable media are also disclosed.

Claims

1. A computer-implemented method for managing virtual machine backups, at least a portion of the method being performed by a computing device comprising at least one processor, the method comprising:

identifying a maximum recovery point objective for a virtual machine with an associated virtual machine disk file on a storage device that possesses hardware snapshot capabilities;

identifying an available hardware snapshot of the storage device on which the virtual machine disk file resides, the hardware snapshot having been created using the hardware snapshot capabilities of the storage device;

determining that a timestamp of the hardware snapshot lies within a period of time defined by the maximum recovery point objective as occurring after an incident that impacts system operation; and

in response to determining that the timestamp of the hardware snapshot lies within the period of time defined by the maximum recovery point objective, constructing a backup of the virtual machine from the hardware snapshot by extending a retention time of the hardware snapshot to the maximum recovery point objective instead of creating the backup from the virtual machine disk file.

2. The method of claim 1, wherein the hardware snapshot of the storage device on which the virtual machine disk file resides is a device-based hardware snapshot produced by the storage device.

3. The method of claim 1, wherein the hardware snapshot of the storage device on which the virtual machine disk file resides was created by a backup operation not related to the virtual machine.

4. The method of claim 1, wherein the storage device is capable of creating a space-optimized read/write snapshot of a volume of data.

5. The method of claim 1, wherein the storage device possesses replication capabilities and constructing the backup of the virtual machine from the hardware snapshot comprises performing a replication of the hardware snapshot.

6. The method of claim 1, wherein the storage device possesses replication capabilities and constructing the backup of the virtual machine from the hardware snapshot comprises copying a replicated copy of the hardware snapshot.

7. The method of claim 1, further comprising restoring the virtual machine backup by:

identifying a plurality of hardware snapshots of the storage device on which the virtual machine disk file resides;

selecting, by comparing characteristics of the plurality of hardware snapshots, a preferred hardware snapshot from within the plurality of hardware snapshots; and

restoring the virtual machine backup from the preferred hardware snapshot.

8. The method of claim 1, further comprising restoring the virtual machine backup by copying files pertaining to the virtual machine from the hardware snapshot of the storage device on which the virtual machine disk file resides.

9. The method of claim 1, wherein the storage device possesses hardware snapshot rollback capabilities and the method further comprises restoring the virtual machine backup by performing a hardware snapshot rollback of files pertaining to the virtual machine.

10. The method of claim 1, wherein the storage device possesses replication capabilities and the method further comprises restoring the virtual machine backup by constructing configuration files pertaining to an alternate storage location and replicating the hardware snapshot to the alternate storage location.

11. The method of claim 1, further comprising restoring the virtual machine backup by copying the hardware snapshot to an alternate storage device possessing replication capabilities and replicating the hardware snapshot to the storage device.

12. The method of claim 1, wherein:

the storage device possesses replication capabilities, the hardware snapshot has previously been copied to an alternate storage location, and modifications to the virtual machine disk file have been replicated to an alternate storage device; and

the method further comprises restoring the virtual machine backup by copying the hardware snapshot to the storage device from the alternate storage location and replicating the modifications to the virtual machine disk file from the alternate storage device to the storage device.

13. A system for managing virtual machine backups, the system comprising:

a recovery point objective identification module that identifies a maximum recovery point objective for a virtual machine with an associated virtual machine disk file on a storage device that possesses hardware snapshot capabilities;

a snapshot identification module that;

identifies an available hardware snapshot of the storage device on which the virtual machine disk file resides, the hardware snapshot having been created using the hardware snapshot capabilities of the storage device;

determines that a timestamp of the hardware snapshot lies within a period of time defined by the maximum recovery point objective as occurring after an incident that impacts system operation;

a backup construction module that, in response to determining that the timestamp of the hardware snapshot lies within the period of time defined by the maximum recovery point objective, constructs a backup of the virtual machine from the hardware snapshot by extending a retention time of the hardware snapshot to the maximum recovery point objective instead of creating the backup from the virtual machine disk file; and

at least one processor that executes the recovery point objective identification module, the snapshot identification module, and the backup construction module.

14. The system of claim 13, wherein the storage device is capable of creating a space-optimized read/write snapshot of a volume of data.

15. The system of claim 13, wherein the storage device possesses replication capabilities and the backup construction module constructs the backup of the virtual machine from the hardware snapshot by performing a replication of the hardware snapshot.

16. The system of claim 13, wherein the storage device possesses replication capabilities and the backup construction module constructs the backup of the virtual machine from the hardware snapshot by copying a replicated copy of the hardware snapshot.

17. The system of claim 13, further comprising a backup restoration module that restores the virtual machine backup by copying files pertaining to the virtual machine from the hardware snapshot of the storage device on which the virtual machine disk file resides.

18. The system of claim 17, wherein the storage device possesses hardware snapshot rollback capabilities and the backup restoration module restores the virtual machine backup by performing a hardware snapshot rollback of files pertaining to the virtual machine.

19. The system of claim 17, wherein the storage device possesses replication capabilities and the backup restoration module restores the virtual machine backup by constructing configuration files pertaining to an alternate storage location and replicating the hardware snapshot to the alternate storage location.

20. A non-transitory computer-readable medium comprising one or more computer-executable instructions that, when executed by at least one processor of a computing device, cause the computing device to:

identify a maximum recovery point objective for a virtual machine with an associated virtual machine disk file on a storage device that possesses hardware snapshot capabilities;

identify an available hardware snapshot of the storage device on which the virtual machine disk file resides, the hardware snapshot having been created using the hardware snapshot capabilities of the storage device;

determine that a timestamp of the hardware snapshot lies within a period of time defined by the maximum recovery point objective as occurring after an incident that impacts system operation; and

in response to determining that the timestamp of the hardware snapshot lies within the period of time defined by the maximum recovery point objective, construct a backup of the virtual machine from the hardware snapshot by extending a retention time of the hardware snapshot to the maximum recovery point objective instead of creating the backup from the virtual machine disk file.