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Oracle Solaris Cluster Data Services Developer's Guide     Oracle Solaris Cluster 4.0
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Document Information


1.  Overview of Resource Management

2.  Developing a Data Service

3.  Resource Management API Reference

4.  Modifying a Resource Type

5.  Sample Data Service

6.  Data Service Development Library

7.  Designing Resource Types

Resource Type Registration File

Validate Method

Start Method

Stop Method

Monitor_start Method

Monitor_stop Method

Monitor_check Method

Update Method

Description of Init, Fini, and Boot Methods

Designing the Fault Monitor Daemon

8.  Sample DSDL Resource Type Implementation

9.  Oracle Solaris Cluster Agent Builder

10.  Generic Data Service

11.  DSDL API Functions

12.  Cluster Reconfiguration Notification Protocol

A.  Sample Data Service Code Listings

B.  DSDL Sample Resource Type Code Listings

C.  Requirements for Non-Cluster-Aware Applications

D.  Document Type Definitions for the CRNP

E. Application


Stop Method

The Stop callback method of a resource type implementation is called by the RGM on a cluster node to stop the application.

The callback semantics for the Stop method demand the following factors:

The DSDL utility scds_pmf_stop() should suffice for most applications as it first attempts to softly stop the application with SIGTERM. This function then delivers a SIGKILL to the process. This function assumes that the application was started under the PMF with scds_pmf_start(). See PMF Functions for details about this utility.

Assuming that the application-specific function that stops the application is called svc_stop(), implement the Stop method as follows:

if (scds_initialize(&handle, argc, argv)!= SCHA_ERR_NOERR)
   return (1);   /* Initialization Error */
return (svc_stop(handle));

Whether or not the implementation of the preceding svc_stop() function includes the scds_pmf_stop() function is irrelevant. Your decision to include the scds_pmf_stop() function depends on whether or not the application was started under the PMF through the Start method.

The svc_validate() method is not used in the implementation of the Stop method because, even if the system is currently experiencing a problem, the Stop method should attempt to stop the application on this node.