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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.

AttributeValue

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 2003 Enterprise, Windows Server 2003 Datacenter

See also

Resource Common Properties
CLUSPROP_DWORD
LooksAlive
LooksAlivePollInterval
Online

 

 

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