SVC cluster configuration node failover

摘要

Methods, systems, and computer programs are provided for failover responses to configuration node failures in SVC clusters. An SVC cluster manages a plurality of storage devices and includes a plurality of SVCs interconnected via a network, each SVC acting as a separate node. A storage device event log is saved, with an original configuration node. An entry is made in the storage device event log each time the original configuration node receives storage device events and setting the entry to a negative value indicating a storage device event has not been handled. The entry is set to a positive value indicating the storage device event has been handled after the original configuration node notifies respective subscribed clients about those of the storage device events the original configuration node receives. A new configuration node is activated in response to configuration node failures.

主权项

1. A failover method for responding to configuration node failures in a SAN Volume Controller (SVC) cluster, wherein the SVC cluster manages a plurality of storage devices and comprises a plurality of SVCs interconnected via the internet, each SVC acting as a separate node, and at any given time, only one node within the SVC cluster functions as a configuration node to operate external services, the method comprising:
setting an entry to a positive value indicating a storage device event has been handled after an original configuration node notifies respective subscribed clients about storage device events the original configuration node receives.