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

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•If the disk is a removable drive with no media, the disk object sets its status toVDS_DS_NO_MEDIA and the values for ulBytesPerSector, ulSectorsPerTrack,ulTracksPerCylinder, and ullSize to zero.•Each disk object implements the IVdsDisk2, IVdsDisk3, IVdsAdvancedDisk2,IVdsCreatePartitionEx, IVdsDiskPartitionMF, IVdsDiskPartitionMF2, andIvdsDiskOnline interfaces.•Each disk object--if the disk is basic or dynamic--maintains a pointer to the pack object towhich it belongs.•Volume•The server maintains an object for each volume on the system.•Each volume object exposes DCOM interfaces for managing a volume, which is a logical unit ofstorage that exists over regions of one or more disks that belong to the same pack.•Each volume object implements the IVdsVolume, IVdsVolume2, IVdsVolumeMF,IVdsVolumeMF2, IVdsVolumeMF3, IVdsVolumeShrink, and IVdsVolumeOnlineinterfaces.•Each volume object maintains a pointer to the pack object to which it belongs.•Removable media drives contain one volume, and the volume is associated with the drive. Ifthere is no media in the drive, the status of the volume is set to VDS_VS_NO_MEDIA andullsize is set to zero.•Volume Plex•The server maintains an object for each volume plex on the system.•Each volume plex object exposes DCOM interfaces for managing a volume plex, whichrepresents a complete copy of the data that is stored on a mirrored volume.•Each volume plex object implements the IVdsVolumePlex interface.•The volume object on a removable media drive contains one volume plex, and the volumeplex is associated with the drive. If there is no media in the drive, the status of the volumeplex is set to VDS_VPS_NO_MEDIA and ullsize is set to zero.•Each volume plex object maintains a pointer to the volume object to which it belongs.•Virtual Disk•The server maintains an object for each attached virtual disk on the system.•The server maintains an object for each virtual disk that has been created usingIVdsVdProvider::CreateVDisk after the server starts, or has been added to the server'scache using IVdsVdProvider::AddVDisk.•Each virtual disk object exposes DCOM interfaces for managing a virtual disk.•Each virtual disk object implements the IVdsVDisk interface.•When a virtual disk is opened, it MUST create an object to represent the open virtual disk(an OpenVirtualDisk object), which MUST implement the IVdsOpenVDisk interface.[MS-VDS] — v20110610Virtual Disk Service (VDS) Protocol SpecificationCopyright © 2011 Microsoft Corporation.Release: Friday, June 10, 2011156 / 360
•Each attached virtual disk object maintains an association with an actual disk (basic, dynamic,or unallocated disk) that has been exposed to the system as a result of attaching the virtualdisk.Each VDS object maintains the following information:VDS Object Identifier: A unique identifier of type VDS_OBJECT_ID.•The server may generate these identifiers at run time.•The server MUST NOT assign two objects to the same identifier.•The server MUST NOT change the identifier for the entire duration of a VDS session or until theobject is removed from the list. A VDS session is defined to be from the point at which a clientreceives a pointer to the service object, to the point at which the client releases all references toit.•The server facilitates ID-based object retrieval.Object Type: A value of type VDS_OBJECT_TYPE, which indicates the type of device that theobject represents.•When a VDS object is created, the server assigns its corresponding object type:•HBA port: VDS_OT_HBAPORT•Initiator adapter: VDS_OT_INIT_ADAPTER•Initiator portal: VDS_OT_INIT_PORTAL•Provider: VDS_OT_PROVIDER•Pack: VDS_OT_PACK•Disk: VDS_OT_DISK•Volume: VDS_OT_VOLUME•Volume plex: VDS_OT_VOLUME_PLEX•Virtual disk: VDS_OT_VDISK•Virtual disk that has been opened: VDS_OT_OPEN_VDISKThe objects can be used by more than one VDS session at a time. Objects can be added or removedas a result of client requests or events that the operating system triggers, such as when a disk is nolonger being reported by its bus, or when the disk's bus reports a new disk.If objects are removed while a client still has references to them, the server MUST return a value ofVDS_E_OBJECT_DELETED (HRESULT of 0x8004240bL) whenever the client attempts to access theobject interface methods.3.4.1.3 Enumeration of ObjectsAll VDS objects that are listed in Storage Management Objects--except for the service object--arereturned by means of enumeration objects. For an example of how these objects are created andused, see section 4.3.[MS-VDS] — v20110610Virtual Disk Service (VDS) Protocol SpecificationCopyright © 2011 Microsoft Corporation.Release: Friday, June 10, 2011157 / 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
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VDS_FSF_ALLOCATION_UNIT_8K = 0x0010
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VDS_DET_OEM: The extent belongs to
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VDS_ESOF_QUICK: Determines whether
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2.2.1.2.21 VDS_LUN_RESERVE_MODEThe
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VDS_VF_NOT_FORMATTABLE: If set, the
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ValueVDS_NF_DISK_ARRIVE0x00000008VD
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wcLetter: The drive letter that tri
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2.2.1.3.10 VDS_ASYNC_OUTPUTThe VDS_
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Value0x4000000000000000GPT_BASIC_DA
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m_bCommandQueueing: A Boolean value
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diskId: The VDS object ID of the di
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MbrPartInfo: Contains information f
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VDS_OT_DISK: The object is a disk.V
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typedef struct _VDS_DRIVE_LETTER_PR
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pSharedSecret: A pointer to an arra
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Corresponding HBA_PORTSTATE value:
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wwnNode: The node WWN for the HBA p
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2.2.2.6.2.2 VDS_ISCSI_INITIATOR_POR
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unsigned long ulFlags;unsigned long
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2.2.2.9.1 Structures2.2.2.9.1.1 VDS
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pwszAdaptorName: The null-terminate
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ValueRemovableMedia0x0000000BFixedM
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style: The value from the VDS_PARTI
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ulFlags: The combination of any val
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VDS_VPT_SPAN = 0x0000000B,VDS_VPT_S
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allocated as the backing store for
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VDS_VST_DETACH_PENDING: The virtual
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} DEPENDENT_DISK_FLAG;DEPENDENT_DIS
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VirtualDeviceType: A pointer to a V
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additional information about the re
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Return value/code0x80042423VDS_E_PR
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Return value/codeDescriptionVDS_E_P
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Return value/codeDescriptionwhen th
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Return value/code0x8004251BVDS_E_VO
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Return value/codeVDS_E_DISK_LAYOUT_
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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
Page 134 and 135: All methods MUST NOT throw exceptio
Page 136 and 137: All methods MUST NOT throw exceptio
Page 138 and 139: MethodDescriptionOpnum: 3FormatAddA
Page 140 and 141: 3.1.13.7 IVdsVolumeOnline Interface
Page 142 and 143: MethodDescriptionOpnum: 6MergeExpan
Page 144 and 145: Virtual Disk Providers and Virtual
Page 146 and 147: For a VDS_DISK_EXTENT or VDS_DISK_F
Page 148 and 149: 3.2.1.4 DisksIVdsAdvancedDisk::GetP
Page 150 and 151: pointer to the virtual disk object
Page 152 and 153: 3.3.2 TimersNone.3.3.3 Initializati
Page 154 and 155: 3.4.1.1 Service ObjectThe service o
Page 158 and 159: When the client calls a method to r
Page 160 and 161: •If the signal state is TRUE and
Page 162 and 163: 3.4.5.1.3 Adding Disk ObjectsThe se
Page 164 and 165: 3.4.5.1.4 Removing Disk ObjectsThe
Page 166 and 167: whether a basic, dynamic, or unallo
Page 168 and 169: If S_FALSE is returned, the client
Page 170 and 171: •Set the list of objects in the n
Page 172 and 173: •Set the pHrResult output paramet
Page 174 and 175: When the server receives this messa
Page 176 and 177: wcFirstLetter: The first drive lett
Page 178 and 179: Result of requeryAction server MUST
Page 180 and 181: ulFlags: A value from the VDS_SERVI
Page 182 and 183: pDiskIdArray: A pointer to an array
Page 184 and 185: 3.4.5.2.8.2 IVdsServiceIscsi::Query
Page 186 and 187: HRESULT GetProperties([out] VDS_HBA
Page 188 and 189: Return Values: The method MUST retu
Page 190 and 191: Return Values: The method MUST retu
Page 192 and 193: VirtualDeviceType: Pointer to a VIR
Page 194 and 195: HRESULT GetDiskFromVDisk([in] IVdsV
Page 196 and 197: 3.4.5.2.18 IVdsPack Methods3.4.5.2.
Page 198 and 199: 3.4.5.2.18.5 IVdsPack::CreateVolume
Page 200 and 201: The server MUST update the percenta
Page 202 and 203: •Return an HRESULT indicating fai
Page 204 and 205: •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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Return Values: The method MUST retu
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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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Return Values: The method MUST retu
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•Create a new async object implem
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The server MUST update the percenta
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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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The server MUST update the percenta
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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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[MS-VDS]: Virtual Disk Service (VDS) Protocol Specification

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