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IVdsSubSystem::Reenumerate method

[Beginning with Windows 8 and Windows Server 2012, the Virtual Disk Service COM interface is superseded by the Windows Storage Management API.]

Prompts the subsystem to scan its bus to discover newly-connected drives or newly-disconnected drives.

Syntax


HRESULT Reenumerate();

Parameters

This method has no parameters.

Return value

This method can return standard HRESULT values, such as E_OUTOFMEMORY, and VDS-specific return values. It can also return converted system error codes using the HRESULT_FROM_WIN32 macro. Errors can originate from VDS itself or from the underlying VDS provider that is being used. Possible return values include the following.

Return code/valueDescription
VDS_E_PROVIDER_CACHE_CORRUPT
0x8004241FL

This return value signals a software or communication problem inside a provider that caches information about the array. Use the IVdsHwProvider::Reenumerate method followed by the IVdsHwProvider::Refresh method to restore the cache.

VDS_E_OBJECT_DELETED
0x8004240BL

The subsystem object is no longer present.

VDS_E_OBJECT_STATUS_FAILED
0x80042431L

The subsystem is in a failed state and is unable to perform the requested operation.

VDS_E_ANOTHER_CALL_IN_PROGRESS
0x80042404L

Another operation is in progress; this operation cannot proceed until the previous operation or operations are complete.

 

Remarks

Most subsystems detect new connections and disconnections automatically. However, for those that do not, this method provides a means by which to initiate detection manually. This operation can take a long time to complete.

When this method detects a newly connected drive, the provider creates a new drive object for it. When the method detects a newly disconnected drive, the provider preserves the old drive object until its last VDS reference is removed, and then deletes the object.

Each object should have a unique and persistent identifier. An object ID must be a valid GUID. Implementers should persist an object ID across each reenumeration by using this method for objects that exist both before and after the reenumeration.

Requirements

Minimum supported client

Windows Vista [desktop apps only]

Minimum supported server

Windows Server 2003 [desktop apps only]

Header

Vds.h;
VdsHwPrv.h (for hardware providers)

Library

Uuid.lib

See also

IVdsSubSystem
IVdsLun::GetProperties
IVdsHwProvider::Reenumerate
IVdsHwProvider::Refresh

 

 

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