Recovery on virtual machines with existing snapshots

Patent metadata

Field	Value
Publication number	US-2020097370-A1
Application number	US-201816136800-A
Country	US
Kind code	A1
Filing date	Sep 20, 2018
Priority date	Sep 20, 2018
Publication date	Mar 26, 2020
Grant date	—

Abstract

According to one embodiment, in response to a request to revert a virtual machine (VM) to a previously backed up consistent state, whether there are one or more existing consistent states on the VM is determined. In response to determining that there are one or more existing consistent states on the VM, a consolidation or deletion of the one or more existing consistent states is initiated based on a selection to consolidate or to delete the one or more existing consistent states. Whether the consolidation or deletion of the one or more existing consistent states was successful is determined. A recovery operation to revert the VM to the previously backed up consistent state is initiated in response to determining that the consolidation or deletion of the one or more existing consistent states was successful.

First claim

What is claimed is:

1 . A computer-implemented method to recover a virtual machine (VM), the method comprising:
in response to a request to revert the VM to a previously backed up consistent state, determining whether there are one or more existing consistent states on the VM; in response to determining that there are one or more existing consistent states on the VM,
initiating a consolidation or deletion of the one or more existing consistent states based on a selection to consolidate or to delete the one or more existing consistent states,
determining whether the consolidation or deletion of the one or more existing consistent states was successful, and
initiating a recovery operation to revert the VM to the previously backed up consistent state in response to determining that the consolidation or deletion of the one or more existing consistent states was successful.

2 . The method of claim 1 , wherein determining whether there are one or more existing consistent states on the VM comprises:
sending a request to a virtual machine monitor (VMM) that manages the VM to check whether there are one or more existing consistent states on the VM, receiving a response from the VMM indicating whether there are one or more existing consistent states on the VM, and determining whether there are one or more existing consistent states on the VM based on the response.

3 . The method of claim 1 , further comprising: prior to initiating the consolidation or deletion of the one or more existing consistent states,
prompting a user with selectable options to either consolidate or to delete the one or more existing consistent states, and receiving a selected option from the user to consolidate or to delete the one or more existing consistent states.

4 . The method of claim 1 , wherein determining whether the consolidation or deletion of the one or more existing consistent states was successful comprises receiving status information from a virtual machine monitor (VMM) indicating that the consolidation or deletion of the one or more existing consistent states was successfully or unsuccessfully performed on the VM.

5 . The method of claim 3 , wherein
initiating the consolidation or deletion of the one or more existing consistent states comprises sending a first command to consolidate or to delete the one or more existing consistent states based on the received selected option, and initiating the recovery operation to revert the VM to the previously backed up consistent state comprises sending a second command to trigger the recovery operation on the VM.

6 . The method of claim 1 , further comprising: in response to determining that there is no existing consistent state on the VM, initiating the recovery operation to revert the VM to the previously backed up consistent state.

7 . The method of claim 1 , further comprising: aborting the recovery operation in response to determining that the consolidation or deletion of the one or more existing consistent states was unsuccessful.

8 . A non-transitory machine-readable medium having instructions stored therein, which when executed by a processor, cause the processor to perform operations, the operations comprising:
in response to a request to revert the VM to a previously backed up consistent state, determining whether there are one or more existing consistent states on the VM; in response to determining that there are one or more existing consistent states on the VM,
initiating a consolidation or deletion of the one or more existing consistent states based on a selection to consolidate or to delete the one or more existing consistent states,
determining whether the consolidation or deletion of the one or more existing consistent states was successful, and
initiating a recovery operation to revert the VM to the previously backed up consistent state in response to determining that the consolidation or deletion of the one or more existing consistent states was successful.

9 . The non-transitory machine-readable medium of claim 8 , wherein determining whether there are one or more existing consistent states on the VM comprises:
sending a request to a virtual machine monitor (VMM) that manages the VM to check whether there are one or more existing consistent states on the VM, receiving a response from the VMM indicating whether there are one or more existing consistent states on the VM, and determining whether there are one or more existing consistent states on the VM based on the response.

10 . The non-transitory machine-readable medium of claim 8 , wherein the operations further comprise: prior to initiating the consolidation or deletion of the one or more existing consistent states,
prompting a user with selectable options to either consolidate or to delete the one or more existing consistent states, and receiving a selected option from the user to consolidate or to delete the one or more existing consistent states.

11 . The non-transitory machine-readable medium of claim 8 , wherein determining whether the consolidation or deletion of the one or more existing consistent states was successful comprises receiving status information from a virtual machine monitor (VMM) indicating that the consolidation or deletion of the one or more existing consistent states was successfully or unsuccessfully performed on the VM.

12 . The non-transitory machine-readable medium of claim 10 , wherein
initiating the consolidation or deletion of the one or more existing consistent states comprises sending a first command to consolidate or to delete the one or more existing consistent states based on the received selected option, and initiating the recovery operation to revert the VM to the previously backed up consistent state comprises sending a second command to trigger the recovery operation on the VM.

13 . The non-transitory machine-readable medium of claim 8 , wherein the operations further comprise: in response to determining that there is no existing consistent state on the VM, initiating the recovery operation to revert the VM to the previously backed up consistent state.

14 . The non-transitory machine-readable medium of claim 8 , wherein the operations further comprise: aborting the recovery operation in response to determining that the consolidation or deletion of the one or more existing consistent states was unsuccessful.

15 . A data processing system, comprising:
a processor; and a memory coupled to the processor to store instructions, which when executed by the processor, cause the processor to perform operations, the operations including: in response to a request to revert the VM to a previously backed up consistent state, determining whether there are one or more existing consistent states on the VM; in response to determining that there are one or more existing consistent states on the VM,
initiating a consolidation or deletion of the one or more existing consistent states based on a selection to consolidate or to delete the one or more existing consistent states,
determining whether the consolidation or deletion of the one or more existing consistent states was successful, and
initiating a recovery operation to revert the VM to the previously backed up consistent state in response to determining that the consolidation or deletion of the one or more existing consistent states was successful.

16 . The data processing system of claim 15 , wherein determining whether there are one or more existing consistent states on the VM comprises:
sending a request to a virtual machine monitor (VMM) that manages the VM

Assignees

• Emc Ip Holding Co Llc

Inventors

• Srinivasan Sharath Talkad
• Rao Mahesh

Classifications

• G06F2009/45591

  Monitoring or debugging support · CPC title

• G06F9/45558

  Hypervisor-specific management and integration aspects · CPC title

• G06F11/1464

  for networked environments · CPC title

• G06F3/04842

  Selection of displayed objects or displayed text elements (G06F3/0482 takes precedence) · CPC title

• G06F11/1469 Primary

  Backup restoration techniques · CPC title