LooksAlivePollInterval
Provides the recommended interval in milliseconds at which the Cluster service should poll the resource to determine if it appears operational. The polling occurs when the Resource Monitor calls the resource DLL's LooksAlive entry point function. The following table summarizes the attributes of the LooksAlivePollInterval property.
| Attribute | Value |
|---|---|
| Data type |
DWORD |
| Access |
Read/write |
| Structure |
CLUSPROP_DWORD |
| Minimum |
10 |
| Maximum |
0xFFFFFFFF |
| Default |
0xFFFFFFFF |
Remarks
If a resource does not set the LooksAlivePollInterval property or sets it to 0xFFFFFFFF, the Cluster service uses the LooksAlivePollInterval property for the resource type associated with the resource.
The resource DLL should return an event handle from the Online call that is signaled when a resource fails. For more information, see Implementing LooksAlive and Implementing Online.
Examples
The property value portion of a property list entry for LooksAlivePollInterval can be set with the following example code:
DWORD LooksAlivePollIntervalData = 300;
CLUSPROP_DWORD LooksAlivePollIntervalValue;
LooksAlivePollIntervalValue.Syntax.dw = CLUSPROP_SYNTAX_LIST_VALUE_DWORD;
LooksAlivePollIntervalValue.cbLength = sizeof(DWORD);
LooksAlivePollIntervalValue.dw = LooksAlivePollIntervalData;
Requirements
| Minimum supported client |
None supported |
| Minimum supported server |
Windows Server 2008 Enterprise, Windows Server 2008 Datacenter |