Windows Dev Center

IVssBackupComponents::RevertToSnapshot method

The RevertToSnapshot method reverts a volume to a previous shadow copy. Only shadow copies created with persistent contexts (VSS_CTX_APP_ROLLBACK, VSS_CTX_CLIENT_ACCESSIBLE, VSS_CTX_CLIENT_ACCESSIBLE_WRITERS, or VSS_CTX_NAS_ROLLBACK) are supported.

Note  This method is only supported on Windows Server operating systems.
 

Syntax


HRESULT RevertToSnapshot(
  [in] VSS_ID SnapshotId,
  [in] BOOL   bForceDismount
);

Parameters

SnapshotId [in]

VSS_ID of the shadow copy to revert.

bForceDismount [in]

If this parameter is TRUE, the volume will be dismounted and reverted even if the volume is in use.

Return value

This method can return one of these values.

ValueMeaning
S_OK

The operation was successful.

E_ACCESSDENIED

The calling process has insufficient privileges.

E_FAIL

There is an internal error.

E_INVALIDARG

One of the parameters passed is not valid.

E_NOTIMPL

The provider for the volume does not support revert operations.

E_OUTOFMEMORY

The caller is out of memory or other system resources.

VSS_E_OBJECT_NOT_FOUND

The SnapshotId parameter is not a valid shadow copy.

VSS_E_PROVIDER_NOT_REGISTERED

The provider was not found.

VSS_E_REVERT_IN_PROGRESS

The volume already has a revert in process.

VSS_E_UNSUPPORTED_CONTEXT

Revert is only supported for persistent shadow copies.

VSS_E_VOLUME_IN_USE

The bForceDismount parameter was FALSE, and the volume could not be locked.

VSS_E_VOLUME_NOT_SUPPORTED

Revert is not supported on this volume.

 

Remarks

This operation cannot be canceled, or undone once completed. If the computer is rebooted during the revert operation, the revert process will continue when the system is restarted.

Requirements

Minimum supported client

None supported

Minimum supported server

Windows Server 2008, Windows Server 2003 with SP1 [desktop apps only]

Header

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

Library

VssApi.lib

See also

IVssBackupComponents
IVssBackupComponents::QueryRevertStatus

 

 

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