Systems and methods for migration of virtual machines across virtual storage resources

• US 9,558,028 B2
• Filed: 01/14/2015
• Issued: 01/31/2017
• Est. Priority Date: 01/14/2015
• Status: Active Grant

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Joshi, Neeraj, Chakkravarthy, Kavi K., Karrotu, Vishnu Murty, Koladi, Krishnaprasad, Devarapalli, Kiran Kumar
• Primary Examiner(s): LE, DIEU MINH T
• Application Number:
  US14/596,588
• Publication Number:
  US 20160203015A1
• Time in Patent Office: 748 Days
• Field of Search: 714/4.1, 714/4.11, 714/4.12, 714/4.2, 714/6.1, 714/6.11, 714/6.32
• US Class Current: 1/1
• CPC Class Codes: G06F 11/1088 Reconstruction on already foreseen single or plurality of spare disks
• CPC Class Codes: G06F 11/1482 by means of middleware or OS functionality
• CPC Class Codes: G06F 11/2094 Redundant storage or storage space G06F11/2056 takes precedence
• CPC Class Codes: G06F 2009/4557 Distribution of virtual machine instances; Migration and load balancing
• CPC Class Codes: G06F 2009/45579 I/O management, e.g. providing access to device drivers or storage
• CPC Class Codes: G06F 2201/815 Virtual middleware or OS functionality using virtual machines to implement generic software techniques for error detection or fault masking G06F11/1484
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects
• 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

In accordance with these and other embodiments of the present disclosure, a system may include a processor and a program of executable instructions embodied in non-transitory computer-readable media accessible to the processor. The program of executable instructions may be configured to, when read and executed by the processor, monitor for a failure of a storage resource in a pool of storage resources configured as a plurality of optimally-redundant virtual storage resources, determine if a virtual storage resource comprising the storage resource is able to rebuild the virtual storage resource, and, in response to determining that the virtual storage resource comprising the storage resource is unable to rebuild the virtual storage resource, migrate each of one or more virtual machines mapped to the virtual storage resource to another virtual storage resource in an optimal redundancy state.

Claims

1. A system comprising:

a processor; and

hardware resources, accessible to the processor, including a non-transitory computer readable medium comprising instructions, executable by the processor, wherein the instructions include;

virtual machine instructions that, when executed by the processor, cause the processor to maintain one or more virtual machines, each of the one or more virtual machines executing, in connection with a hypervisor, a corresponding guest operating system to manage allocation and usage of the hardware resources; and

program instructions that, when read and executed by the processor, cause the processor to perform operations comprising;

monitoring for a failure of a storage resource in a pool of storage resources configured as a plurality of optimally-redundant virtual storage resources;

determining if a virtual storage resource comprising the storage resource is able to rebuild the virtual storage resource; and

in response to determining that the virtual storage resource comprising the storage resource is unable to rebuild the virtual storage resource, migrating each of the one or more virtual machines mapped to the virtual storage resource to another virtual storage resource in an optimal redundancy state.

2. The system of claim 1, wherein migrating each of one or more virtual machines mapped to the virtual storage resource to another virtual storage resource in an optimal redundancy state comprises:

calculating a data store size of each of one or more virtual machines mapped to the virtual storage resource;

calculating an available storage capacity for each other virtual storage resource within the pool that is in an optimal redundancy state;

comparing the data store sizes of each of one or more virtual machines mapped to the virtual storage resource to the available storage capacities for each other virtual storage resource within the pool that is in an optimal redundancy state; and

migrating one or more of the virtual machines mapped to the virtual storage resource based on the comparisons.

3. The system of claim 1, wherein migrating each of one or more virtual machines mapped to the virtual storage resource to another virtual storage resource in an optimal redundancy state comprises migrating each of one or more virtual machines mapped to the virtual storage resource to a single virtual storage resource within the pool that is in an optimal redundancy state.

4. The system of claim 1, wherein migrating each of one or more virtual machines mapped to the virtual storage resource to another virtual storage resource in an optimal redundancy state comprises migrating a first virtual machine mapped to the virtual storage resource to a second virtual storage resource in the pool that is in an optimal redundancy state and migrating a second virtual machine mapped to the virtual storage resource to a third virtual storage resource in the pool that is in an optimal redundancy state.

5. The system of claim 1, wherein migrating each of one or more virtual machines mapped to the virtual storage resource to another virtual storage resource in an optimal redundancy state comprises migrating a first virtual machine mapped to the virtual storage resource to another virtual storage resource in the pool that is in an optimal redundancy state and maintaining a second virtual machine mapped to the virtual storage resource without migration from the virtual storage resource.

6. The system of claim 1, wherein the pool is a user-defined plurality of optimally-redundant virtual storage resources.

7. A method, comprising:

maintaining one or more virtual machines, each of the one or more virtual machines executing, in connection with a hypervisor, a corresponding guest operating system to manage allocation and usage of the hardware resources;

monitoring for a failure of a storage resource in a pool of storage resources configured as a plurality of optimally-redundant virtual storage resources;

determining if a virtual storage resource comprising the storage resource is able to rebuild the virtual storage resource; and

in response to determining that the virtual storage resource comprising the storage resource is unable to rebuild the virtual storage resource, migrating each of the one or more virtual machines mapped to the virtual storage resource to another virtual storage resource in an optimal redundancy state.

8. The method of claim 7, wherein migrating each of one or more virtual machines mapped to the first virtual storage resource to another virtual storage resource in an optimal redundancy state comprises:

calculating a data store size of each of one or more virtual machines mapped to the virtual storage resource;

calculating an available storage capacity for each other virtual storage resource within the pool that is in an optimal redundancy state;

comparing the data store sizes of each of one or more virtual machines mapped to the virtual storage resource to the available storage capacities for each other virtual storage resource within the pool that is in an optimal redundancy state; and

migrating one or more of the virtual machines mapped to the virtual storage resource based on the comparisons.

9. The method of claim 7, wherein migrating each of one or more virtual machines mapped to the virtual storage resource to another virtual storage resource in an optimal redundancy state comprises migrating each of one or more virtual machines mapped to the virtual storage resource to a single virtual storage resource within the pool that is in an optimal redundancy state.

10. The method of claim 7, wherein migrating each of one or more virtual machines mapped to the virtual storage resource to another virtual storage resource in an optimal redundancy state comprises migrating a first virtual machine mapped to the virtual storage resource to a second virtual storage resource in the pool that is in an optimal redundancy state and migrating a second virtual machine mapped to the virtual storage resource to a third virtual storage resource in the pool that is in an optimal redundancy state.

11. The method of claim 7, wherein migrating each of one or more virtual machines mapped to the virtual storage resource to another virtual storage resource in an optimal redundancy state comprises migrating a first virtual machine mapped to the virtual storage resource to another virtual storage resource in the pool that is in an optimal redundancy state and maintaining a second virtual machine mapped to the virtual storage resource without migration from the virtual storage resource.

12. The method of claim 7, wherein the pool is a user-defined plurality of optimally-redundant virtual storage resources.

13. An article of manufacture comprising:

a non-transitory computer readable medium; and

computer-executable instructions carried on the computer readable medium, the instructions readable by a processor, the instructions, when read and executed, for causing the processor to;

maintaining one or more virtual machines, each of the one or more virtual machines executing, in connection with a hypervisor, a corresponding guest operating system to manage allocation and usage of the hardware resources;

monitoring for a failure of a storage resource in a pool of storage resources configured as a plurality of optimally-redundant virtual storage resources;

determining if a virtual storage resource comprising the storage resource is able to rebuild the virtual storage resource; and

in response to determining that the virtual storage resource comprising the storage resource is unable to rebuild the virtual storage resource, migrating each of one or more virtual machines mapped to the virtual storage resource to another virtual storage resource in an optimal redundancy state.

14. The article of claim 13, wherein migrating each of one or more virtual machines mapped to the first virtual storage resource to another virtual storage resource in an optimal redundancy state comprises:

calculating a data store size of each of one or more virtual machines mapped to the virtual storage resource;

calculating an available storage capacity for each other virtual storage resource within the pool that is in an optimal redundancy state;

comparing the data store sizes of each of one or more virtual machines mapped to the virtual storage resource to the available storage capacities for each other virtual storage resource within the pool that is in an optimal redundancy state; and

migrating one or more of the virtual machines mapped to the virtual storage resource based on the comparisons.

15. The article of claim 13, wherein migrating each of one or more virtual machines mapped to the virtual storage resource to another virtual storage resource in an optimal redundancy state comprises migrating each of one or more virtual machines mapped to the virtual storage resource to a single virtual storage resource within the pool that is in an optimal redundancy state.

16. The article of claim 13, wherein migrating each of one or more virtual machines mapped to the virtual storage resource to another virtual storage resource in an optimal redundancy state comprises migrating a first virtual machine mapped to the virtual storage resource to a second virtual storage resource in the pool that is in an optimal redundancy state and migrating a second virtual machine mapped to the virtual storage resource to a third virtual storage resource in the pool that is in an optimal redundancy state.

17. The article of claim 13, wherein migrating each of one or more virtual machines mapped to the virtual storage resource to another virtual storage resource in an optimal redundancy state comprises migrating a first virtual machine mapped to the virtual storage resource to another virtual storage resource in the pool that is in an optimal redundancy state and maintaining a second virtual machine mapped to the virtual storage resource without migration from the virtual storage resource.

18. The article of claim 13, wherein the pool is a user-defined plurality of optimally-redundant virtual storage resources.