Providing fault tolerance in a virtualized computing environment through a migration approach based on resource availability

Patent metadata

Field	Value
Publication number	US-10019330-B2
Application number	US-201514964847-A
Country	US
Kind code	B2
Filing date	Dec 10, 2015
Priority date	Dec 10, 2015
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

An example method is described to provide fault tolerance in a virtualized computing environment with a first fault domain and a second fault domain. The method may comprise determining whether a primary virtualized computing instance and a secondary virtualized computing instance are both in the first fault domain. The secondary virtualized computing instance may be configured as a backup for the primary virtualized computing instance and supported by a first host. The method may further comprise: in response to determination that the primary virtualized computing instance and secondary virtualized computing instance are both in the first fault domain, selecting, from the second fault domain, a second host based on a resource availability of the second host; and migrating the secondary virtualized computing instance from the first host to the second host, thereby migrating the secondary virtualized computing instance from the first fault domain to the second fault domain.

First claim

We claim:

1. A method to provide fault tolerance in a virtualized computing environment with a first fault domain and a second fault domain, the method comprising:
determining whether a primary virtualized computing instance and a secondary virtualized computing instance are both in the first fault domain, wherein the secondary virtualized computing instance is configured as a backup for the primary virtualized computing instance and supported by a first host;
in response to determination that the primary virtualized computing instance and secondary virtualized computing instance are both in the first fault domain,
determining a resource availability of each of a plurality of hosts that include the first host and the second host, wherein the second host is in the second fault domain;
comparing the resource availability of each of the plurality of hosts to select the second host with a most resource availability;
based on a resource consumption of the secondary virtualized computing instance, updating a resource availability of the first host and a resource availability of the second host; and
migrating the secondary virtualized computing instance from the first host to the second host based on the updated resource availability of the first host and the updated resource availability of the second host, thereby migrating the secondary virtualized computing instance from the first fault domain to the second fault domain.

2. The method of claim 1 , wherein the determining the resource availability of each of a plurality of hosts comprises:
determining the resource availability to be a weighted value of one or more of: central processing unit (CPU) availability, memory availability, storage resource availability and network resource availability.

3. The method of claim 1 , wherein the updating the resource availability of the first host and the resource availability of the second host comprises:
based on the resource consumption of the secondary virtualized computing instance, increasing the resource availability of the first host and decreasing the resource availability of the second host.

4. The method of claim 1 , wherein the method further comprises:
identifying the first fault domain based on one or more of: a first datacenter, a first pod, a first rack and a first chassis in the virtualized computing environment; and
identifying the second fault domain based on one or more of: a second datacenter, a second pod, a second rack and a second chassis in the virtualized computing environment.

5. The method of claim 1 , wherein load distribution is substantially unbalanced among the plurality of hosts in the virtualized computing environment.

6. The method of claim 1 , wherein the method is performed by a management entity that is configured to instruct the first host to migrate the secondary virtualized computing instance to the second host.

7. A non-transitory computer-readable storage medium that includes a set of instructions which, in response to execution by a processor computing system, causes the processor to perform a method to provide fault tolerance in a virtualized computing environment with a first fault domain and a second fault domain, wherein the method comprises:
determining whether a primary virtualized computing instance and a secondary virtualized computing instance are both in the first fault domain, wherein the secondary virtualized computing instance is configured as a backup for the primary virtualized computing instance and supported by a first host;
in response to determination that the primary virtualized computing instance and secondary virtualized computing instance are both in the first fault domain,
determining a resource availability of each of a plurality of hosts that include the first host and the second host, wherein the second host is in the second fault domain;
comparing the resource availability of each of the plurality of hosts to select the second host with a most resource availability;
based on a resource consumption of the secondary virtualized computing instance, updating a resource availability of the first host and a resource availability of the second host; and
migrating the secondary virtualized computing instance from the first host to the second host based on the updated resource availability of the first host and the updated resource availability of the second host, thereby migrating the secondary virtualized computing instance from the first fault domain to the second fault domain.

8. The non-transitory computer-readable storage medium of claim 7 , wherein the determining the resource availability of each of a plurality of hosts comprises:
determining the resource availability to be a weighted value of one or more of: central processing unit (CPU) availability, memory availability, storage resource availability and network resource availability.

9. The non-transitory computer-readable storage medium of claim 7 , wherein the updating the resource availability of the first host and the resource availability of the second host comprises:
based on the resource consumption of the secondary virtualized computing instance, increasing the resource availability of the first host and decreasing the resource availability of the second host.

10. The non-transitory computer-readable storage medium of claim 7 , wherein the method further comprises:
identifying the first fault domain based on one or more of: a first datacenter, a first pod, a first rack and a first chassis in the virtualized computing environment; and
identifying the second fault domain based on one or more of: a second datacenter, a second pod, a second rack and a second chassis in the virtualized computing environment.

11. The non-transitory computer-readable storage medium of claim 7 , wherein load distribution is substantially unbalanced among the plurality of hosts in the virtualized computing environment.

12. The non-transitory computer-readable storage medium of claim 7 , wherein the method is performed by a management entity that is configured to instruct the first host to migrate the secondary virtualized computing instance to the second host.

13. A computer system to provide fault tolerance in a virtualized computing environment with a first fault domain and a second fault domain, comprising:
a processor;
a non-transitory computer-readable storage medium storing instructions that, in response to execution by the processor, cause the processor to:
determine whether a primary virtualized computing instance and a secondary virtualized computing instance are both in the first fault domain, wherein the secondary virtualized computing instance is configured as a backup for the primary virtualized computing instance and supported by a first host;
in response to determination that the primary virtualized computing instance and secondary virtualized computing instance are both in the first fault domain,
determine a resource availability of each of a plurality of hosts that include the first host and the second host, wherein the second host is in the second fault domain;
compare the resource availability of each of the plurality of hosts to select the second host with a most resource availability;
based on a resource consumption of the secondary virtualized computing instance, update a resource availability of the first host and a resource availability of the second host; and
migrate the secondary virtualized computing instance from the first host to the second host based on the updated resource availability of the first host and the updated resource availability of the second host, thereby migrating the secondary virtualized com

Assignees

• Vmware Inc

Inventors

• Wu Xiaojin
• Xie Pin
• Chen Shi
• Li Biwen
• Su Yan

Classifications

• G06F2201/85

  Active fault masking without idle spares · CPC title

• G06F2009/4557

  Distribution of virtual machine instances; Migration and load balancing · CPC title

• G06F9/45558 Primary

  Hypervisor-specific management and integration aspects · CPC title

• G06F11/006

  Identification (G06F11/2289 takes precedence) · CPC title

• G06F11/203 Primary

  using migration · CPC title