Synchronizing the Startups Between Resource Groups and Disk Device Groups

The following feature was introduced in the Sun Cluster 3.0 5/02 update release and applies to this update and all subsequent updates to Sun Cluster 3.0 software.

After a cluster boots up or services fail over to another node, global devices and cluster file systems might require time to become available. However, a data service can run its START method before global devices and cluster file systems-on which the data service depends-come online. In this instance, the START method times out, and you must reset the state of the resource groups that the data service uses and restart the data service manually.The resource types HAStorage and HAStoragePlus monitor the global devices and cluster file systems and cause the START method of the other resources in the same resource group to wait until they become available. (To determine which resource type to use, see "Recommendations" in the Sun Cluster 3.0 12/01 Data Services Installation and Configuration Guide.) To avoid additional administrative tasks, set up HAStorage or HAStoragePlus for all of the resource groups whose data service resources depend on global devices or cluster file systems.

To create an HAStoragePlus resource type, see "How to Set Up HAStoragePlus Resource Type (5/02)".