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IVssBackupComponentsEx2::BreakSnapshotSetEx method

Breaks a shadow copy set according to requester-specified options.

Syntax


HRESULT BreakSnapshotSetEx(
  [in]   VSS_ID SnapshotSetID,
  [in]   DWORD dwBreakFlags,
  [out]  IVssAsync **ppAsync
);

Parameters

SnapshotSetID [in]

A shadow copy set identifier.

dwBreakFlags [in]

A bitmask of _VSS_HARDWARE_OPTIONS flags that specify how the shadow copy set is broken.

ppAsync [out]

A pointer to a variable that receives an IVssAsync interface pointer that can be used to retrieve the status of the shadow copy set break operation. When the break operation is complete, the IUnknown::Release method must be called for this interface pointer.

Return value

The following are the valid return codes for this method.

ValueMeaning
S_OK
0x00000000L

The shadow copy set was successfully broken.

E_ACCESSDENIED
0x80070005L

The caller does not have sufficient privileges or is not an administrator.

E_INVALIDARG
0x80070057L

One of the parameter values is not valid.

E_OUTOFMEMORY
0x8007000EL

The caller is out of memory or other system resources.

VSS_E_BREAK_REVERT_ID_FAILED
0x800423F6L

The shadow copy set break operation failed because the MBR disk signature, the GPT disk identifier, or the GPT partition identifier of one or more of the destination LUNs could not be reverted to those of the original LUNs. If one or more original LUNs are not masked on the computer, the break operation would cause a signature collision.

VSS_E_OBJECT_NOT_FOUND
0x80042308L

The specified shadow copy does not exist.

VSS_E_PROVIDER_VETO
0x80042306L

The shadow copy was created by a software provider and cannot be broken.

VSS_E_UNEXPECTED

Unexpected error. The error code is logged in the error log file. For more information, see Event and Error Handling Under VSS.

Windows Server 2008, Windows Vista, Windows Server 2003, and Windows XP:  This value is not supported until Windows Server 2008 R2 and Windows 7. E_UNEXPECTED is used instead.

 

Remarks

BreakSnapshotSetEx is similar to the IVssBackupComponents::BreakSnapshotSet method, except that it has extra parameters to query status and specify how the shadow copy set is broken.

Like BreakSnapshotSet, BreakSnapshotSetEx can be used only for shadow copies that were created by a hardware shadow copy provider.

After this method returns, the shadow copy volume is still a volume, but it is no longer a shadow copy. For more information, see Breaking Shadow Copies.

Requirements

Minimum supported client

Windows Vista with SP1 [desktop apps only]

Minimum supported server

Windows Server 2008 [desktop apps only]

Header

VsBackup.h (include VsBackup.h, Vss.h, or VsWriter.h)

 

 

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