VIRTUAL MACHINE MIGRATION TASK MANAGEMENT

• US 20200133718A1
• Filed: 10/31/2018
• Published: 04/30/2020
• Est. Priority Date: 10/31/2018
• Status: Active Grant

• Current Assignee: Nutanix Incorporated
• Original Assignee: Nutanix Incorporated
• Inventors: Koehler, Heiko Friedrich, Narkhede, Sameer, Kothakota, Venkatesh
• Granted Patent: US 11,194,620 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 2009/4557 Distribution of virtual machine instances; Migration and load balancing
• CPC Class Codes: G06F 9/45533 Hypervisors; Virtual machine monitors
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects
• CPC Class Codes: G06F 9/4856 resumption being on a different machine, e.g. task migration, virtual machine migration G06F9/5088 takes precedence
• CPC Class Codes: G06F 9/4881 Scheduling strategies for dispatcher, e.g. round robin, multi-level priority queues
• CPC Class Codes: G06F 9/5077 Logical partitioning of resources; Management or configuration of virtualized resources specific details on emulation or internal functioning of virtual machines G06F9/455

Abstract

Systems and methods for preferential treatment of a prioritized virtual machine during migration of a group of virtual machines from a first virtualized computing environment to a second virtualized computing environment. A data structure is allocated to store virtual machine migration task attributes that are associated with a plurality of in-process virtual machine migration tasks. As migration proceeds, the migration task attributes in the data structure are updated to reflect ongoing migration task scheduling adjustments and ongoing migration task resource allotments. A user interface or other process indicates a request to prioritize migration of a particular one of the to-be-migrated virtual machines. Based on the request, at least some of the virtual machine migration task attributes are modified to indicate a reduced scheduling priority of some of the to-be-migrated virtual machine migration tasks so as to preferentially deliver computing resources to the prioritized virtual machine migration tasks.

Claims

1. A method for virtual machine migration task management, the method performed by a computer and comprising:

allocating a token to a virtual machine migration task that is being executed in accordance with a virtual machine migration state to migrate a virtualized entity from a source computing environment to a target computing environment;

invoking execution of the virtual machine migration task using a token-based scheduler; and

wherein the token is allocated to the virtual machine migration task in accordance with a corresponding scheduling priority assignment.

2. The method of claim 1, wherein the token corresponds to at least one of, a CPU resource token, a networking resource token, or a storage resource token.

3. The method of claim 2, wherein a quantity of the token is determined based at least in part on availability of a computing resource.

4. The method of claim 1, wherein the virtualized entity comprises at least one of, a virtual disk, or a virtual NIC.

5. The method of claim 1, further comprising receiving a re-prioritization signal.

6. The method of claim 5, wherein the re-prioritization signal derives from a user interface.

7. The method of claim 1, further comprising:

implementing a data structure to store a virtual machine migration task attribute, the virtual machine migration task attribute being associated with execution of the virtual machine migration task;

detecting a status change to the virtual machine migration task; and

updating the virtual machine migration task attribute recorded in the data structure, the virtual machine migration task attribute being updated based at least in part on the status change.

8. The method of claim 7, wherein the virtual machine migration task attribute corresponds to at least one of, a priority level, a token allocation, or status indicator.

9. The method of claim 1, wherein the source computing environment comprises a first hypervisor type and the target computing environment comprises a second hypervisor type.

22. The method of claim 1, wherein the virtualized entity comprises at least one of, a virtual disk, or a virtual NIC.

23. The method of claim 1, further comprising:

implementing a data structure to store a virtual machine migration task attribute, the virtual machine migration task attribute being associated with execution of the virtual machine migration task;

detecting a status change to the virtual machine migration task; and

updating the virtual machine migration task attribute recorded in the data structure, the virtual machine migration task attribute being updated based at least in part on the status change.

10. A non-transitory computer readable medium having stored thereon a sequence of instructions which, when stored in memory and executed by a processor causes the processor to perform a set of acts for virtual machine migration task management, the acts comprising:

allocating a token to a virtual machine migration task that is being executed in accordance with a virtual machine migration state to migrate a virtualized entity from a source computing environment to a target computing environment;

invoking execution of the virtual machine migration task using a token-based scheduler; and

wherein the token is allocated to the virtual machine migration task in accordance with a corresponding scheduling priority assignment.

11. The computer readable medium of claim 10, wherein the token corresponds to at least one of, a CPU resource token, a networking resource token, or a storage resource token.

12. The computer readable medium of claim 11, wherein a quantity of the token is determined based at least in part on availability of a computing resource.

13. The computer readable medium of claim 10, wherein the virtualized entity comprises at least one of, a virtual disk, or a virtual NIC.

14. The computer readable medium of claim 10, further comprising instructions which, when stored in memory and executed by the processor causes the processor to perform acts of receiving a re-prioritization signal.

15. The computer readable medium of claim 14, wherein the re-prioritization signal derives from a user interface.

16. The computer readable medium of claim 10, further comprising instructions which, when stored in memory and executed by processor causes the processor to perform acts of:

implementing a data structure to store a virtual machine migration task attribute, the virtual machine migration task attribute being associated with execution of the virtual machine migration task;

detecting a status change to the virtual machine migration task; and

updating the virtual machine migration task attribute recorded in the data structure, the virtual machine migration task attribute being updated based at least in part on the status change.

17. The computer readable medium of claim 16, wherein the virtual machine migration task attribute corresponds to at least one of, a priority level, a token allocation, or status indicator.

18. The computer readable medium of claim 10, wherein the source computing environment comprises a first hypervisor type and the target computing environment comprises a second hypervisor type.

19. A system for virtual machine migration task management, comprising:

a storage medium having stored thereon a sequence of instructions; and

a processor that execute the instructions to cause the processor to perform a set of acts, the acts comprising,

allocating a token to a virtual machine migration task that is being executed in accordance with a virtual machine migration state to migrate a virtualized entity from a source computing environment to a target computing environment;

invoking execution of the virtual machine migration task using a token-based scheduler; and

wherein the token is allocated to the virtual machine migration task in accordance with a corresponding scheduling priority assignment.

20. The system of claim 19, wherein the token corresponds to at least one of, a CPU resource token, a networking resource token, or a storage resource token.

21. The system of claim 19, wherein a quantity of the token is determined based at least in part on availability of a computing resource.