In-place data recovery

Patent metadata

Field	Value
Publication number	US-12299309-B2
Application number	US-202318399905-A
Country	US
Kind code	B2
Filing date	Dec 29, 2023
Priority date	Mar 26, 2021
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

An in-place data recovery method and system include receiving a user request to restore a virtual machine to a version corresponding to a first point in time, identifying a first snapshot of the virtual machine based on the user request, generating a second snapshot of the virtual machine, identifying a second data block in the second snapshot that includes modified data derived from data content of a first data block in the first snapshot, generating reverse incremental backup data including the first data block, and restoring the virtual machine in-place based on the reverse incremental backup data.

First claim

What is claimed is:

1. A method, comprising:
receiving a request to restore a virtual machine to a version corresponding to a first point in time;
identifying a first snapshot of the virtual machine based on the request;
generating a second snapshot of the virtual machine, the second snapshot corresponding to a second point in time subsequent to the request;
generating reverse incremental backup data based on the first snapshot and the second snapshot; and
restoring the virtual machine in-place based on the reverse incremental backup data.

2. The method of claim 1 , wherein the reverse incremental backup data comprises a first data block in the first snapshot that corresponds to a second data block in the second snapshot, wherein the second data block includes modified data compared to the first data block.

3. The method of claim 2 , wherein restoring the virtual machine in-place further comprises:
overwriting the second data block in a disk of the virtual machine with the first data block.

4. The method of claim 3 , wherein restoring the virtual machine in-place further comprises:
identifying a block offset associated with the second data block in the disk of the virtual machine, wherein overwriting the second data block in the disk with the first data block is based on the block offset.

5. The method of claim 1 , wherein the reverse incremental backup data comprises metadata that identifies the virtual machine, one or more configuration properties of the virtual machine, or a combination thereof.

6. The method of claim 5 , wherein the one or more configuration properties include one or more of a number of CPUs, a size of memory, and a number of disks of the virtual machine, and wherein the restored virtual machine is associated with the one or more configuration properties.

7. The method of claim 1 , further comprising:
in response to receiving the request, disconnecting the virtual machine from a virtual power source or a network of a primary storage platform hosting the virtual machine prior to generating the second snapshot.

8. The method of claim 7 , further comprising:
reconnecting the virtual machine to the virtual power source or the network of the primary storage platform upon restoring the virtual machine in-place based on the reverse incremental backup data.

9. The method of claim 7 , further comprising:
restoring the virtual machine in-place while the virtual machine is disconnected from the virtual power source or the network of the primary storage platform.

10. The method of claim 1 , further comprising:
upon restoring the virtual machine in-place, removing the second snapshot from a storage appliance associated with the virtual machine in absence of a second request to keep the second snapshot.

11. The method of claim 1 , wherein identifying the first snapshot of the virtual machine based on the request further comprises:
identifying the first snapshot based on an associated search index being included in the request.

12. The method of claim 1 , wherein the first snapshot is a full snapshot or an incremental snapshot.

13. A system, comprising:
a memory storing instructions; and
one or more processors communicatively coupled to the memory and configured by the instructions to perform operations comprising:
receiving a request to restore a virtual machine to a version corresponding to a first point in time;
identifying a first snapshot of the virtual machine based on the request;
generating a second snapshot of the virtual machine, the second snapshot corresponding to a second point in time subsequent to the request;
generating reverse incremental backup data based on the first snapshot and the second snapshot; and
restoring the virtual machine in-place based on the reverse incremental backup data.

14. The system of claim 13 , wherein the reverse incremental backup data comprises a first data block in the first snapshot that corresponds to a second data block in the second snapshot, wherein the second data block includes modified data compared to the first data block.

15. The system of claim 14 , wherein restoring the virtual machine in-place comprises:
overwriting the second data block in a disk of the virtual machine with the first data block.

16. The system of claim 15 , wherein restoring the virtual machine in-place comprises:
identifying a block offset associated with the second data block in the disk of the virtual machine, wherein overwriting the second data block in the disk with the first data block is based on the block offset.

17. The system of claim 13 , wherein the reverse incremental backup data comprises metadata that identifies the virtual machine, one or more configuration properties of the virtual machine, or a combination thereof.

18. The system of claim 17 , wherein the one or more configuration properties include one or more of a number of CPUs, a size of memory, and a number of disks of the virtual machine, and wherein the restored virtual machine is associated with the one or more configuration properties.

19. The system of claim 13 , the one or more processors configured by the instructions to perform operations further comprising:
in response to receiving the request, disconnecting the virtual machine from a virtual power source or a network of a primary storage platform hosting the virtual machine prior to generating the second snapshot.

20. A non-transitory computer-readable storage medium comprising instructions that, when executed by a processing device, cause the processing device to perform operations comprising:
receiving a request to restore a virtual machine to a version corresponding to a first point in time;
identifying a first snapshot of the virtual machine based on the request;
generating a second snapshot of the virtual machine, the second snapshot corresponding to a second point in time subsequent to the request;
generating reverse incremental backup data based on the first snapshot and the second snapshot; and
restoring the virtual machine in-place based on the reverse incremental backup data.

Assignees

• Rubrik Inc

Inventors

• Meadowcroft Benjamin Travis
• Su Disheng
• Ding Li
• Konarev Roman
• Chaudhry Samir Rishi
• Wu Shirong
• Zhang Tianpei
• Wang Wei

Classifications

• G06F3/0664

  at device level, e.g. emulation of a storage device or system · CPC title

• G06F9/45558

  Hypervisor-specific management and integration aspects · CPC title

• G06F2009/45583

  Memory management, e.g. access or allocation · CPC title

• G06F3/0619

  in relation to data integrity, e.g. data losses, bit errors · CPC title

• G06F11/1451

  by selection of backup contents · CPC title