US 2024/0394085 A1 · FAILURE BEHAVIOR OF STRETCHED CLUSTERS

Abstract

The disclosure provides an approach for failure behavior. Embodiments include detecting a virtual computing instance (VCI) operating on a first node in a first fault domain in a multi-fault domain storage cluster also including a second fault domain comprising a second node, and a witness fault domain comprising a witness node. Embodiments also include automatically registering the first fault domain as a preferred fault domain for the VCI. Embodiments include determining, at the second fault domain, whether a loss of communication over an inter-fault domain network link between the first fault domain and the second fault domain is due to a failure of the first fault domain or of the inter-fault domain network link. Further, embodiments include, in response to the failure of the first fault domain, restarting, on the second node, the VCI, and automatically registering the second fault domain as the preferred fault domain for the VCI.

Claims20

Dependent claims

A method comprising:

detecting a virtual computing instance (VCI) operating on a first node in a first fault domain in a multi-fault domain storage cluster comprising:
the first fault domain comprising the first node,
a second fault domain comprising a second node, and
a witness fault domain comprising a witness node;
automatically registering the first fault domain as a preferred fault domain for the VCI;
determining, at the second fault domain, whether a loss of communication over an inter-fault domain network link between the first fault domain and the second fault domain is due to a failure of the first fault domain or a failure of the inter-fault domain network link;
and
in response to the failure of the first fault domain:
restarting, on the second node of the second fault domain, the VCI;
and
automatically registering the second fault domain as the preferred fault domain for the VCI.

8 more elements

A multi-fault domain storage cluster comprising:

a first fault domain comprising a first node;
a second fault domain comprising a second node, and
a witness fault domain comprising a witness node;
wherein the witness node is configured to:
detect a virtual computing instance (VCI) operating on the first node;
automatically register the first fault domain as a preferred fault domain for the VCI;
and
in response to the VCI restarting on the second node, automatically register the second fault domain as the preferred fault domain for the VCI;
and
wherein the second node is configured to:
determine whether a loss of communication over an inter-fault domain network link between the first fault domain and the second fault domain is due to a failure of the first fault domain or a failure of the inter-fault domain network link;
and
in response to the failure of the first fault domain, restart the VCI on the second node.

10 more elements

One or more non-transitory computer-readable media storing instructions that, when executed by processors of a multi-fault domain storage cluster, cause the processors to:

detect a virtual computing instance (VCI) operating on a first node in a first fault domain in the multi-fault domain storage cluster comprising:
the first fault domain comprising the first node,
a second fault domain comprising a second node, and
a witness fault domain comprising a witness node;
automatically register the first fault domain as a preferred fault domain for the VCI;
determine, at the second fault domain, whether a loss of communication over an inter-fault domain network link between the first fault domain and the second fault domain is due to a failure of the first fault domain or a failure of the inter-fault domain network link;
and
in response to the failure of the first fault domain:
restart, on the second node of the second fault domain, the VCI;
and
automatically register the second fault domain as the preferred fault domain for the VCI.

8 more elements

Dependencies are inferred from the claim text.

Failure behavior of stretched clusters

Life of this patent

Failure behavior of stretched clusters

Life of this patent

Abstract

Claims20