Fault Monitor

The RGOffload fault monitor prevents noncritical resource groups from being brought online on the node that masters the critical resource. The fault monitor might detect that a noncritical resource group is online on the node that masters the critical resource. In this situation, the fault monitor attempts to start the resource group on other nodes. The fault monitor also brings offline the resource group on the node that masters the critical resource.

Because desired_primaries for noncritical resource groups is set to 0, offloaded resource groups are not restarted on nodes that become available later. Therefore, the RGOffload fault monitor attempts to start noncritical resource groups on as many primaries as possible, until maximum_primaries limit is reached. However, the fault monitor keeps noncritical resource groups offline on the node that masters the critical resource.

RGOffload attempts to start all offloaded resource groups unless the resource groups are in the MAINTENANCE or UNMANAGED state. To place a resource group in an UNMANAGED state, use the scswitch command.

# scswitch -u -g resourcegroup

The value of the RGOffload resource's Thorough_probe_interval property specifies the interval between fault monitor probes.