HP StorageWorks Clustered File System 3.2.1 Windows Storage Server Edition Administration Guide (February 2006)

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Configure Notifiers

If you would like certain actions to take place when cluster events occur,

you can configure notifiers that define how the events should be handled.

Overview

HP StorageWorks Clustered File System uses notifiers to enable you to

view event information generated by servers, network interfaces, virtual

hosts, service monitors, device monitors, and filesystems. Notifiers send

events from these entities to user-defined notifier scripts. The events are

categorized as State Transitions, Errors, Warnings, and Informational

messages.

One server in a cluster holds the responsibility to forward a global event

message to notifier scripts. The global events are generally state transition

events. Some events such as errors, warnings, and informational

messages from service monitors are reported only locally on a server.

Any local event will be forwarded to notifier scripts that have subscribed

to the event and entity combination on the server.

We recommend that you configure notifier scripts on each server in the

cluster because the server responsible for handling global events may

change in the normal course of ClusterPulse processing. Only one notifier

event message is delivered for each invocation of a notifier script. If

multiple notifiers subscribe to the same combination of event and entity,

then when an event is triggered, each notifier script is given a copy of the

event message.