[MS-VDS]: Virtual Disk Service (VDS) Protocol Specification

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allocated as the backing store for the virtual disk and that this file will automatically increasein size to accommodate the allocated data.A virtual disk created using the CREATE_ VIRTUAL_DISK_FLAG_NONE flag has a virtual diskfile backing store that at any given time is as large as the actual data written to it, plus thesize of the header and footer. As more data is written, the virtual disk file automaticallyincreases in size.For example, if the CREATE_VIRTUAL_DISK_FLAG_NONE flag is used to create a virtual diskthat is 2 gigabytes in size, the initial size of the virtual disk file backing store may only be 2megabytes. As data is written to this disk, the virtual disk file backing store increases in size,with a maximum size of 2 gigabytes.CREATE_VIRTUAL_DISK_FLAG_FULL_PHYSICAL_ALLOCATION: Specifies that the servershould preallocate all physical space necessary for the virtual size of the virtual disk. A fixedsize virtual disk file will be allocated as the backing store for the virtual disk. For example,creating a fixed size virtual disk that is 2 gigabytes in size using this flag will result in a virtualdisk file that is approximately 2 gigabytes in size.2.2.2.17.2 Structures2.2.2.17.2.1 VDS_CREATE_VDISK_PARAMETERSThe VDS_CREATE_VDISK_PARAMETERS structure contains the parameters to be used when avirtual disk is created.typedef struct _VDS_CREATE_VDISK_PARAMETERS {GUID UniqueId;ULONGLONG MaximumSize;ULONG BlockSizeInBytes;ULONG SectorSizeInBytes;[string] LPWSTR pParentPath;[string] LPWSTR pSourcePath;} VDS_CREATE_VDISK_PARAMETERS,*PVDS_CREATE_VDISK_PARAMETERS;UniqueId: A unique and non-zero GUID value to be assigned to the virtual disk.MaximumSize: The maximum virtual size, in bytes, of the virtual disk object.BlockSizeInBytes: The internal block size, in bytes, of the virtual disk object. If the virtual diskobject being created is a differencing disk, this value MUST be 0. If the virtual disk objectbeing created is not a differencing disk, setting this value to 0 causes the virtual disk objectbeing created to use the default block size.SectorSizeInBytes: Internal sector size, in bytes, of the virtual disk object. This value MUST beset to 512 (CREATE_VIRTUAL_DISK_PARAMETERS_DEFAULT_SECTOR_SIZE).pParentPath: A null-terminated wide-character string containing an optional path to a parentvirtual disk object. This member associates the new virtual hard disk with an existing virtualhard disk. Used when creating a differencing disk. The differencing disk gets its size from itsparent.A differencing disk represents the current state of the virtual disk as a set of modified blocksin comparison to a parent disk. A differencing disk is not independent; it depends on the[MS-VDS] — v20110610Virtual Disk Service (VDS) Protocol SpecificationCopyright © 2011 Microsoft Corporation.Release: Friday, June 10, 201184 / 360
parent disk to be fully functional. A differencing disk must be created using theCREATE_VIRTUAL_DISK_FLAG_NONE flag. The parent disk can be created using either theCREATE_VIRTUAL_DISK_FLAG_NONE orCREATE_VIRTUAL_DISK_FLAG_FULL_PHYSICAL_ALLOCATION flag. The parent disk can beanother differencing disk.pSourcePath: A null-terminated wide-character string containing an optional path to a sourceof data to be copied to the new virtual hard disk. When pSourcePath is specified, data fromthe input virtual disk file is copied block for block from the input virtual disk file to the createdvirtual disk file. There is no parent-child relationship established.2.2.2.18 IVdsVDisk Data TypesThis section lists data types that are used exclusively by methods in the IVdsVDisk interface.2.2.2.18.1 Enumerations2.2.2.18.1.1 VDS_VDISK_STATEThe VDS_VDISK_STATE enumeration describes the state of a virtual disk.typedef enum{VDS_VST_UNKNOWN = 0,VDS_VST_ADDED = 1,VDS_VST_OPEN = 2,VDS_VST_ATTACH_PENDING = 3,VDS_VST_ATTACHED_NOT_OPEN = 4,VDS_VST_ATTACHED = 5,VDS_VST_DETACH_PENDING = 6,VDS_VST_COMPACTING = 7,VDS_VST_MERGING = 8,VDS_VST_EXPANDING = 9,VDS_VST_DELETED = 10,VDS_VST_MAX = 11} VDS_VDISK_STATE;VDS_VST_UNKNOWN: VDS was not able to identify the disk's current status.VDS_VST_ADDED: The virtual disk is added to the service's list of objects.VDS_VST_OPEN: The virtual disk has been added to the service's list of objects, and the virtualdisk file has been opened using IVdsVDisk::Open.VDS_VST_ATTACH_PENDING: The virtual disk has been added to the service's list of objects,the virtual disk file has been opened using IVdsVDisk::Open, and the virtual disk is in theprocess of being attached.VDS_VST_ATTACHED_NOT_OPEN: The virtual disk has been added to the service's list ofobjects and the virtual disk is attached, but the virtual disk file is not open.VDS_VST_ATTACHED: The virtual disk has been added to the service's list of objects, thevirtual disk file has been opened using IVdsVDisk::Open, and the virtual disk is attached.[MS-VDS] — v20110610Virtual Disk Service (VDS) Protocol SpecificationCopyright © 2011 Microsoft Corporation.Release: Friday, June 10, 201185 / 360
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Revision SummaryDateRevisionHistory
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Contents1 Introduction ............
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2.2.2.6.1 Enumerations ............
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3.1.12.2 IVdsDisk2 Interface ......
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3.4.5.2.6.2 IVdsServiceUninstallDis
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3.4.5.2.32.3 IVdsVolumeMF::AddAcces
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1 IntroductionThe Virtual Disk Serv
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volume managervolume plexThe follow
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virtual disk: A disk that does not
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Note There is a charge to download
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1.4 Relationship to Other Protocols
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Parameter Value ReferenceRPC interf
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2 MessagesThe following sections sp
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VDS_H_FAILING_REDUNDANCY: One or mo
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VDS_ASYNCOUT_CREATEPARTITION: Infor
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VDSStorageIdTypeVendorSpecific = 0x
Page 34 and 35: VDS_FSF_ALLOCATION_UNIT_8K = 0x0010
Page 36 and 37: VDS_DET_OEM: The extent belongs to
Page 38 and 39: VDS_ESOF_QUICK: Determines whether
Page 40 and 41: 2.2.1.2.21 VDS_LUN_RESERVE_MODEThe
Page 42 and 43: VDS_VF_NOT_FORMATTABLE: If set, the
Page 44 and 45: ValueVDS_NF_DISK_ARRIVE0x00000008VD
Page 46 and 47: wcLetter: The drive letter that tri
Page 48 and 49: 2.2.1.3.10 VDS_ASYNC_OUTPUTThe VDS_
Page 50 and 51: Value0x4000000000000000GPT_BASIC_DA
Page 52 and 53: m_bCommandQueueing: A Boolean value
Page 54 and 55: diskId: The VDS object ID of the di
Page 56 and 57: MbrPartInfo: Contains information f
Page 58 and 59: VDS_OT_DISK: The object is a disk.V
Page 60 and 61: typedef struct _VDS_DRIVE_LETTER_PR
Page 62 and 63: pSharedSecret: A pointer to an arra
Page 64 and 65: Corresponding HBA_PORTSTATE value:
Page 66 and 67: wwnNode: The node WWN for the HBA p
Page 68 and 69: 2.2.2.6.2.2 VDS_ISCSI_INITIATOR_POR
Page 70 and 71: unsigned long ulFlags;unsigned long
Page 72 and 73: 2.2.2.9.1 Structures2.2.2.9.1.1 VDS
Page 74 and 75: pwszAdaptorName: The null-terminate
Page 76 and 77: ValueRemovableMedia0x0000000BFixedM
Page 78 and 79: style: The value from the VDS_PARTI
Page 80 and 81: ulFlags: The combination of any val
Page 82 and 83: VDS_VPT_SPAN = 0x0000000B,VDS_VPT_S
Page 86 and 87: VDS_VST_DETACH_PENDING: The virtual
Page 88 and 89: } DEPENDENT_DISK_FLAG;DEPENDENT_DIS
Page 90 and 91: VirtualDeviceType: A pointer to a V
Page 92 and 93: additional information about the re
Page 94 and 95: Return value/code0x80042423VDS_E_PR
Page 96 and 97: Return value/codeDescriptionVDS_E_P
Page 98 and 99: Return value/codeDescriptionwhen th
Page 100 and 101: Return value/code0x8004251BVDS_E_VO
Page 102 and 103: Return value/codeVDS_E_DISK_LAYOUT_
Page 104 and 105: Return value/code0x80042566VDS_E_IN
Page 106 and 107: Return value/code0x80042588VDS_E_VO
Page 108 and 109: Return value/codeVDS_E_ASSOCIATED_P
Page 110 and 111: Return value/code0x80042815VDS_E_VO
Page 112 and 113: Return value/code0x8004290AVDS_E_IS
Page 114 and 115: Return value/code0x80042924VDS_E_RA
Page 116 and 117: 3 Protocol DetailsThe following sec
Page 118 and 119: ParameterRPC interface UUID forIVds
Page 120 and 121: Objects can be HBA ports, initiator
Page 122 and 123: 3.1.5 Service Object InterfacesThis
Page 124 and 125: Methods in RPC Opnum OrderMethodGet
Page 126 and 127: Methods in RPC Opnum OrderMethodGet
Page 128 and 129: MethodGetPropertiesDescriptionRetri
Page 130 and 131: MethodDescriptionOpnum: 3SetImportT
Page 132 and 133: MethodQueryExtentsConvertStyleSetFl
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All methods MUST NOT throw exceptio
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All methods MUST NOT throw exceptio
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MethodDescriptionOpnum: 3FormatAddA
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3.1.13.7 IVdsVolumeOnline Interface
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MethodDescriptionOpnum: 6MergeExpan
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Virtual Disk Providers and Virtual
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For a VDS_DISK_EXTENT or VDS_DISK_F
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3.2.1.4 DisksIVdsAdvancedDisk::GetP
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pointer to the virtual disk object
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3.3.2 TimersNone.3.3.3 Initializati
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3.4.1.1 Service ObjectThe service o
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•If the disk is a removable drive
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When the client calls a method to r
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•If the signal state is TRUE and
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3.4.5.1.3 Adding Disk ObjectsThe se
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3.4.5.1.4 Removing Disk ObjectsThe
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whether a basic, dynamic, or unallo
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If S_FALSE is returned, the client
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•Set the list of objects in the n
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•Set the pHrResult output paramet
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When the server receives this messa
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wcFirstLetter: The first drive lett
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Result of requeryAction server MUST
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ulFlags: A value from the VDS_SERVI
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pDiskIdArray: A pointer to an array
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3.4.5.2.8.2 IVdsServiceIscsi::Query
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HRESULT GetProperties([out] VDS_HBA
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Return Values: The method MUST retu
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VirtualDeviceType: Pointer to a VIR
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HRESULT GetDiskFromVDisk([in] IVdsV
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3.4.5.2.18 IVdsPack Methods3.4.5.2.
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3.4.5.2.18.5 IVdsPack::CreateVolume
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The server MUST update the percenta
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•Return an HRESULT indicating fai
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•objectType member is the value V
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[out] IVdsPack** ppPack);ppPack: A
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Clients cannot change the partition
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ERROR_SUCCESS (0x00000000)When the
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HRESULT QueryPartitions([out, size_
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•For each callback object that is
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3.4.5.2.23.7 IVdsAdvancedDisk::Dele
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Note This method is not valid on CD
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•objectType member is VDS_NTT_VOL
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•ullOffset is the byte offset at
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eginning of the disk that ullOffset
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usFileSystemRevision: A 16-bit, bin
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HRESULT FormatPartitionEx2([in] ULO
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•Set the signal state in the asyn
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•Create a new async object implem
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If the volume resides on a basic di
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•Delete all volume plexes in the
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•For each callback object registe
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If the volume is associated with a
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The server MUST then perform the fo
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•Verify that plNumberOfAccessPath
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HRESULT Mount();This method has no
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HRESULT GetFileSystemTypeName([out,
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•Return an HRESULT indicating fai
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•Allocate a buffer to hold the vo
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•Verify that ullDesiredNumberOfRe
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•Verify that ppVolume is not NULL
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•Search all software providers fo
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ProviderSpecificFlags: Flags specif
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For example, to merge a differencin
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At any point in the preceding seque
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•objectType member is VDS_NTT_FIL
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•Volume member is a VDS_VOLUME_NO
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Figure 2: Client starting a VDS ses
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4.1.2 Ending SessionsThe following
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2. The server determines that the c
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Figure 8: Retrieving the properties
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8. When the format operation comple
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wprintf( L" Volume Id: %s\n", buffe
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6 Appendix A: Full IDLFor ease of i
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VDSBusTypeiScsi = 0x00000009,VDSBus
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} VDS_VOLUME_TYPE;typedef enum _VDS
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VDS_OBJECT_IDULONGLONG} VDS_PARTITI
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typedef struct _VDS_STORAGE_DEVICE_
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} GptPartInfo;[default];};} CREATE_
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VDS_PS_UNKNOWN = 0x00000000,VDS_PS_
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typedef struct _VDS_FILE_SYSTEM_TYP
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typedef struct _VDS_PACK_PROP{VDS_O
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OPEN_VIRTUAL_DISK_FLAG_NO_PARENTS =
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);[out] unsigned long *pcFetched[he
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HRESULT QueryFileSystemTypes([out,
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*pInitiatorSharedSecret,[in] VDS_OB
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}[]HRESULT CreatePack([out] IVdsPac
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HRESULT CreateVolume([in] VDS_VOLUM
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[object,uuid(8F4B2F5D-EC15-4357-992
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uuid(9882f547-cfc3-420b-9750-00dfbe
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);[helpstring("method QueryPlexes")
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);[helpstring("method Mount")]HRESU
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[object,uuid(4daa0135-e1d1-40f1-aaa
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7 Appendix B: Product BehaviorThe i
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Supported operating system versionI
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•Dynamic disk volumes - The flag
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overwritten with "UDF". The first e
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Section 3.1.7.1: This interface is
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Section 3.4.5.2.18.5: The Windows i
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On Windows Server 2003, Windows Ser
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incorrectly returns 0 in the pulPer
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Section 3.4.5.2.38.3: Windows does
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•Protocol syntax updated due to p
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IVdsVolumeMF (section 2.2.2.15 81,
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enumerations 70interface 130methods
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PVDS_REPARSE_POINT_PROP 81PVDS_VDIS
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VDS_SERVICE_NOTIFICATION structure
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