使用VirtualDisk API创建VHD文件

Question

我试图使用VSS快照作为CreateVirtualDisk（）的源。环境/工具是C++ VS2008SP1和7.1 SDK上W7x64Ultimate

[编辑]

这适用于Windows 7 64位

BOOL CreateVHD_Fixed(PCWSTR pszVhdPath, ULONG sizeInMB) 
{ 
    BOOL bRet = FALSE; 
    HANDLE hvhd; 
    CREATE_VIRTUAL_DISK_PARAMETERS params; 
    VIRTUAL_DISK_ACCESS_MASK  mask; 
    VIRTUAL_STORAGE_TYPE   vst = 
    { 
     VIRTUAL_STORAGE_TYPE_DEVICE_VHD, 
     VIRTUAL_STORAGE_TYPE_VENDOR_MICROSOFT 
    }; 

    wprintf(L"CreateVHD_Fixed %s, size (MB) %d\n", pszVhdPath, sizeInMB); 

    params.Version1.UniqueId   = GUID_NULL; 
    params.Version1.BlockSizeInBytes = 0; 
    params.Version1.MaximumSize   = sizeInMB * 1024 * 1024; 
    params.Version1.ParentPath   = NULL; 
    params.Version1.SourcePath   = NULL; 
    params.Version1.SectorSizeInBytes = 512; 
    params.Version   = CREATE_VIRTUAL_DISK_VERSION_1; 
    mask        = VIRTUAL_DISK_ACCESS_CREATE; 

    DWORD ret = CreateVirtualDisk(&vst, 
     pszVhdPath, 
     mask, 
     NULL, 
     // To create a dynamic disk, use CREATE_VIRTUAL_DISK_FLAG_NONE instead. 
     CREATE_VIRTUAL_DISK_FLAG_FULL_PHYSICAL_ALLOCATION, 
     0, 
     &params, 
     NULL, 
     &hvhd); 

    if (ret == ERROR_SUCCESS) 
    { 
     bRet = TRUE; 
    } 
    else 
    { 
     bRet = FALSE; 
     printf("failed to create vdisk...err 0x%x\n", ret); 
     PrintErrorMessage(GetLastError()); 
    } 

    if (INVALID_HANDLE_VALUE != hvhd) 
    { 
     CloseHandle(hvhd); 
    } 

    return bRet; 
} 

[编辑] - 现在失败与ERROR_INVALID_PARAMETER以不同的方式。参数如下用 “\？\ GLOBALROOT \设备\ HarddiskVolumeShadowCopy64”

VIRTUAL_STORAGE_TYPE storageType = 
    { 
     VIRTUAL_STORAGE_TYPE_DEVICE_VHD, 
     // do not use any other GUID else you get an unknown provider error 
     VIRTUAL_STORAGE_TYPE_VENDOR_MICROSOFT // **critical!** 
    }; 

    VIRTUAL_DISK_ACCESS_MASK vdam = (VIRTUAL_DISK_ACCESS_MASK)(VIRTUAL_DISK_ACCESS_CREATE); // |VIRTUAL_DISK_ACCESS_WRITABLE|VIRTUAL_DISK_ACCESS_READ|VIRTUAL_DISK_ACCESS_GET_INFO); 
    CREATE_VIRTUAL_DISK_FLAG flags = CREATE_VIRTUAL_DISK_FLAG_FULL_PHYSICAL_ALLOCATION; // CREATE_VIRTUAL_DISK_FLAG_NONE; 
    CREATE_VIRTUAL_DISK_PARAMETERS parameters; 
    // 
    parameters.Version = CREATE_VIRTUAL_DISK_VERSION_1; 
    parameters.Version1.UniqueId = GUID_NULL; 
    parameters.Version1.MaximumSize = 0; 
    parameters.Version1.BlockSizeInBytes = CREATE_VIRTUAL_DISK_PARAMETERS_DEFAULT_BLOCK_SIZE; 
    parameters.Version1.ParentPath = 0; 
    parameters.Version1.SourcePath = root.c_str(); 
    parameters.Version1.SectorSizeInBytes = CREATE_VIRTUAL_DISK_PARAMETERS_DEFAULT_SECTOR_SIZE; 
    ULONG ProviderSpecificFlags = 0; 

HANDLE handle = 0; 
dwRet = CreateVirtualDisk(&storageType, 
_T("t:\\test.vhd"), 
vdam, 
NULL, 
flags, 
ProviderSpecificFlags, 
&parameters,0,&handle); 

任何想法的根路径？虚拟磁盘API似乎没有太多示例代码。

Thx ++

杰里。

Answer 1

杰里，

使用CreateVirtualDisk API来创建一个VHD或差异VHD，请确保你寄正确的参数。您必须指定父硬盘，但不是源硬盘。使用标志时还必须小心。

请参考以下链接： “http://code.msdn.microsoft.com/windowshardware/CppVhdAPI-4412d182”

和

“http://code.msdn.microsoft.com/windowsdesktop/Virtual-hard-disk-03108ed3”