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man pages section 3: Library Interfaces and Headers     Oracle Solaris 10 8/11 Information Library
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Document Information

Preface

Introduction

Library Interfaces and Headers

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libMPAPI

, libmpapi

- Common Mulitipath Management library

Synopsis

cc [ flag... ] file... -lMPAPI  [ library... ]
#include <mpapi.h>

Description

The functions in this library allow a management application to administer the multipath devices and associated resources through standard interfaces, independent of a vendor-unique multipathing solution.

INTERFACES

The shared object libMPAPI.so.1 provides the public interfaces defined below. See Intro(3) for additional information on shared object interfaces.

Usage

Client applications link with the Common Library (using -lMPAPI) to access the interfaces. The Common Library dynamically loads an individual vendor-provided plugin library that is available through MP_RegisterPlugin(3MPAPI) on the host system.

Using libMPAPI involves the following steps:

  1. Optionally calling MP_GetLibraryProperties() to retrieve the properties of the Common Library.

  2. Calling MP_GetPluginOidList() to retrieve the registered plugin libraries.

  3. Optionally calling MP_GetPluginProperties() to retrieve the properties of the plugin library.

  4. Retrieve discovery information and property information on multipath devices and associated resources by calling the following:

    • MP_GetAssociatedPathOidList()

    • MP_GetAssociatedTPGOidList()

    • MP_GetDeviceProductOidList()

    • MP_GetDeviceProductProperties()

    • MP_GetInitiatorPortOidList()

    • MP_GetInitiatorPortProperties()

    • MP_GetMPLuOidListFromTPG()

    • MP_GetMPLogicalUnitProperties()

    • MP_GetMultipathLus()

    • MP_GetPathLogicalUnitProperties()

    • MP_GetProprietaryLoadBalanceOidList()

    • MP_GetProprietaryLoadBalanceProperties()

    • MP_GetTargetPortGroupProperties()

    • MP_GetTargetPortOidList()

    • MP_GetTargetPortProperties()

  5. Register and deregister for property and visibility changes on multipath devices and associated resources by calling:

    • MP_RegisterForObjectPropertyChanges()

    • MP_RegisterForObjectVisibilityChanges()

    • MP_DeregisterForObjectPropertyChanges()

    • MP_DeregisterForObjectVisibilityChanges()

  6. Perform administrative operations on multipath devices and associated resources by calling:

    • MP_AssignLogicalUnitToTPG()

    • MP_CancelOverridePath()

    • MP_DisableAutoFailback()

    • MP_DisableAutoProbing()

    • MP_DisablePath()

    • MP_EnableAutoFailback()

    • MP_EnableAutoProbing()

    • MP_EnablePath()

    • MP_SetLogicalUnitLoadBalanceType()

    • MP_SetOverridePath()

    • MP_SetPathWeight()

    • MP_SetPluginLoadBalanceType()

    • MP_SetFailbackPollingRate()

    • MP_SetProbingPollingRate()

    • MP_SetProprietaryProperties()

    • MP_SetTPGAccess()

Errors

Errors are generally returned from the underlying VSL and can include any of the following values:

MP_STATUS_SUCCESS

This status value is returned when the requested operation is successfully carried out.

MP_STATUS_INVALID_PARAMETER

This status value is returned when parameters passed to an API are detected to be invalid or inappropriate for a particular API parameter. If the parameter is an object ID, this status indicates that the object type subfield is defined in this specification, but is not appropriate for this API

MP_STATUS_UNKNOWN_FN

This status value is returned when a client function passed into the API is not a previously registered or known function.

MP_STATUS_FAILED

This status value is returned when the requested operation could not be carried out.

MP_STATUS_INSUFFICIENT_MEMORY

This status value is returned when the API could [not] allocate the memory required to complete the requested operation.

MP_STATUS_INVALID_OBJECT_TYPE

This status value is returned when an object ID includes a type subfield that is not defined in this specification.

MP_STATUS_OBJECT_NOT_FOUND

This status value is returned when the object associated with the ID specified in the API could not be located, or has been deleted. Note that an invalid object type is covered by MP_STATUS_INVALID_OBJECT_TYPE so this status is limited to an invalid object owner identifier or sequence number.

MP_STATUS_UNSUPPORTED

This status value is returned when the implementation does not support the requested function.

MP_STATUS_FN_REPLACED

This status value is returned when a client function passed into the API replaces a previously registered function.

MP_STATUS_ACCESS_STATE_INVALID

This status value is returned when a device processing MP_SetTPGAccess returns a status indicating that the caller is attempting to establish an illegal combination of access states.

MP_STATUS_PATH_NONOPERATIONAL

This status is returned when communication cannot be established with the path selected by the caller.

MP_STATUS_TRY_AGAIN

This status is returned when the plugin or driver is unable to complete the request, but might be able to complete it later.

MP_STATUS_NOT_PERMITTED

The operation is not permitted in the current configuration, but might be permitted in other configurations.

Files

/usr/lib/libMPAPI.so

shared object

/usr/lib/64/libMPAPI.so

64–bit shared object

Attributes

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Availability
SUNWmpapir
SUNWmpapi (Header file)
Interface Stability
Standard: ANSI INCITS 412 Multipath Management API
MT-Level
Safe

See Also

Intro(3), MP_RegisterPlugin(3MPAPI), attributes(5)

Multipath Management API Version 1.0