Cluster failover for storage management services
View Patent ↗A method, system, and computer program product to enable other nodes in a cluster to resume operations of a failed node. These operations include storage management services that allow configuration changes to be made dynamically to storage resources. Resource configuration data are synchronized on a set of nodes in a cluster immediately when a resource configuration change is made. If a node that has made a resource configuration change fails, the resource configuration change is available for use by other nodes in the set, each of which can resume operations of the failed node.
1. A method comprising:
synchronizing resource configuration data for a resource, wherein
the resource configuration data reside on a set of at least two nodes of a cluster comprising a plurality of nodes,
the synchronizing uses a private channel,
the nodes of the cluster are coupled to one another by the private channel, and
the synchronizing is performed when the resource configuration data are changed; and
resuming operation of the resource at a second node of the set of at least two nodes using the resource configuration data when a first node of the set of at least two nodes fails, wherein
the first node managed the resource prior to failure.
2. The method of claim 1 , wherein
the set of at least two nodes of the cluster comprises all nodes in the cluster.
3. The method of claim 1 , wherein
the resource configuration data comprise a value of an attribute of a resource definition for the resource.
4. The method of claim 3 , wherein the resource definition is defined in a context of a cluster manager.
5. The method of claim 1 , wherein
the synchronizing the resource configuration data comprises
causing modification of a value of an attribute of a resource definition, and
sending the value of the attribute as the resource configuration data to each node of the set of at least two nodes.
6. The method of claim 1 , further comprising:
creating a resource definition for the resource from the resource configuration data on one node of the set of at least two nodes, wherein
the one node uses the resource definition for managing the resource.
7. A system comprising:
means for synchronizing resource configuration data for a resource, wherein
the resource configuration data reside on a set of at least two nodes of a cluster comprising a plurality of nodes,
the means for synchronizing is configured to use a private channel,
the nodes of the cluster are coupled to one another by the private channel, and
the resource configuration data are synchronized when the resource configuration data are changed; and
means for resuming operation of the resource at a second node of the set of at least two nodes using the resource configuration data when a first node of the set of at least two nodes fails, wherein
the first node managed the resource prior to failure.
8. The system of claim 7 , wherein
the means for synchronizing the resource configuration data comprises
means for causing modification of a value of an attribute of a resource definition, and
means for sending the value of the attribute as the resource configuration data to each node in the set of at least two nodes.
9. The system of claim 7 , further comprising:
means for creating a resource definition for the resource from the resource configuration data on one node of the set of at least two nodes, wherein
the one node uses the resource definition for managing the resource.
10. A computer program product comprising:
synchronizing instructions to synchronize resource configuration data for a resource, wherein
the resource configuration data reside on a set of at least two nodes of a cluster comprising a plurality of nodes,
the synchronizing instructions use a Private channel,
the nodes of the cluster are coupled to one another by the private channel, and
the resource configuration data are synchronized when the resource configuration data are changed;
resuming instructions to resume operation of the resource at a second node of the set of at least two nodes using the resource configuration data when a first node of the set of at least two nodes fails, wherein
the first node managed the resource prior to failure, and
the computer-readable medium further stores; and
a computer-readable storage medium configured to store the synchronizing instructions and the resuming instructions.
11. The computer program product of claim 10 , wherein the synchronizing instructions comprise
causing instructions to cause modification of a value of an attribute of a resource definition, and
sending instructions to send the value of the attribute as the resource configuration data to each node in the set of at least two nodes;
and
the computer-readable storage medium is further configured to store the causing instructions and the sending instructions.
12. The computer program product of claim 10 , further comprising:
creating instructions to create a resource definition for the resource from the resource configuration data on one node of the set of at least two nodes, wherein
the one node uses the resource definition for managing the resource, and
the computer-readable storage medium is further configured to store the causing instructions.
13. A system comprising:
a synchronizing module to synchronize resource configuration data for a resource, wherein
the resource configuration data reside on a set of at least two nodes of a cluster comprising a plurality of nodes,
the synchronizing module uses a private channel,
the nodes of the cluster are coupled to one another by the private channels and
the resource configuration data are synchronized when the resource configuration data are changed; and
a resuming module to resume operation of the resource at a second node of the set of at least two nodes using the resource configuration data when a first node of the set of at least two nodes fails, wherein
the first node managed the resource prior to failure.
14. The system of claim 13 wherein
the synchronizing module comprises
a causing module to cause modification of a value of an attribute of a resource definition, and
a sending module to send the value of the attribute as the resource configuration data to each node in the set of at least two nodes.
15. The system of claim 13 further comprising:
a creating module to create a resource definition for the resource from the resource configuration data on one node of the set of at least two nodes, wherein
the one node uses the resource definition for managing the resource.