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

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•Dynamic disk volumes - The flag is per volume. VDS_VF_NO_DEFAULT_DRIVE_LETTER isset at volume creation. Dynamic will be the same as basic GPT on Windows Vista, WindowsServer 2008, Windows 7, Windows Server 2008 R2. The flag toggles when drive letters areassigned or removed, and can also be set or cleared using any of the Set/ClearFlags methods.•MBR basic disk volumes - The flag is applied to all volumes created on the disk after the flag isset. It is set per disk for basic MBR disks, not per volume. The flag is only set or cleared if anexplicit call is made to the IVdsVolume::SetFlags (section 3.4.5.2.30.10) andIVdsVolume::ClearFlag (section 3.4.5.2.30.11) methods, respectively. For example, theVDS_VF_NO_DEFAULT_DRIVE_LETTER flag is not toggled as drive letters are assigned to orremoved from specific volumes.•GPT basic disk volumes - The flag is per volume, data partitions only.VDS_VF_NO_DEFAULT_DRIVE_LETTER is set at volume creation, and toggled when driveletters are assigned or removed (by VDS). Section 2.2.1.2.23: For Windows Server 2003 and Windows Server 2003 R2,VDS_VF_NO_DEFAULT_DRIVE_LETTER cannot be set or cleared on dynamic disk volumes, andis always enabled. On basic disks, it is disabled by default, and the flags can only be changed usingthe IVdsVolume::SetFlags (section 3.4.5.2.30.10) and IvdsVolume::ClearFlag (section3.4.5.2.30.11) methods. Assigning or removing a drive letter does not toggle the flag for basic GPTdisks. Section 2.2.1.2.23: Windows Vista, Windows Server 2008, and Windows Server 2008 R2 useBitLocker full-volume encryption. Section 2.2.1.3.1: This notification is never sent by the Windows implementation of theVirtual Disk Service. Section 2.2.1.3.11: Windows recognizes the following partition types on MBR disks and treatsall others as OEM partitions (which do not automatically get assigned drive letters except inWindows Preinstallation Environment (Windows PE)):Value0x000x010x040x050x060x070x0B0x0C0x0E0x0F0x42MeaningAn unused entry.Partition with 12-bit FAT entries.Partition with 16-bit FAT entries.Extended partition entry.MS-DOS version 4 huge partition.Installable file system (IFS) partition.FAT32 partition.FAT32 partition using extended INT13 services.16-bit FAT partition using extended INT13 services.Extended partition using extended INT13 services.Logical disk manager (LDM) data partition.338 / 360[MS-VDS] — v20110610Virtual Disk Service (VDS) Protocol SpecificationCopyright © 2011 Microsoft Corporation.Release: Friday, June 10, 2011
Section 2.2.1.3.12: Windows recognizes the following partition types on GPT disks.Value{C12A7328-F81F-11D2-BA4B-00A0C93EC93B}{E3C9E316-0B5C-4DB8-817D-F92DF00215AE}{EBD0A0A2-B9E5-4433-87C0-68B6B72699C7}{5808C8AA-7E8F-42E0-85D2-E1E90434CFB3}{AF9B60A0-1431-4F62-BC68-3311714A69AD}{DE94BBA4-06D1-4D40-A16A-BFD50179D6AC}MeaningEFI system partition.MSR space partition; used to reserve space for subsequent use byoperating system software.A basic data partition.LDM metadata partition.LDM data partition.Microsoft recovery partition. Section 2.2.1.3.12: The partition is recognized as an OEM partition and will not be convertedto dynamic if the disk is converted to dynamic. The partition will not get a drive letter except inWindows PE. Section 2.2.1.3.18: This structure is used only in Windows Vista and Windows Server 2008. Section 2.2.1.3.22: Only the basic data partition type is allowed. Section 2.2.1.3.22: The partition is recognized as an OEM partition and is not converted todynamic if the disk is converted to dynamic. The partition does not get a drive letter except inWindows PE. Section 2.2.1.3.23: This structure is used only in Windows 7 and Windows Server 2008 R2. Section 2.2.2.1.2.3: VDS_QUERY_HARDWARE_PROVIDERS returns no additional providerswhen it is used with IVdsService::QueryProviders(Opnum 6) on a Windows installation that hasno additional software installed. Third-party providers must be installed to get hardware providers. Section 2.2.2.1.3.1: Each version of Windows has its pwszVersion string set as follows.VersionpwszVersion stringWindows Server 2003 1.0Windows Server 2003 R2 1.1Windows Vista 2.0Windows Server 2008 2.1Windows Server 2008 R2 3.0Windows 7 3.0 Section 2.2.2.1.3.3: A code flaw in Windows Server 2003, Windows Server 2003 R2,Windows Vista, and Windows Server 2008 results in: (1) The first entry's wszName field being[MS-VDS] — v20110610Virtual Disk Service (VDS) Protocol SpecificationCopyright © 2011 Microsoft Corporation.Release: Friday, June 10, 2011339 / 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
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Return value/code0x80042588VDS_E_VO
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Return value/codeVDS_E_ASSOCIATED_P
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Return value/code0x80042815VDS_E_VO
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Return value/code0x8004290AVDS_E_IS
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Return value/code0x80042924VDS_E_RA
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3 Protocol DetailsThe following sec
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ParameterRPC interface UUID forIVds
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Objects can be HBA ports, initiator
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3.1.5 Service Object InterfacesThis
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Methods in RPC Opnum OrderMethodGet
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Methods in RPC Opnum OrderMethodGet
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MethodGetPropertiesDescriptionRetri
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MethodDescriptionOpnum: 3SetImportT
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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
Page 288 and 289: Figure 8: Retrieving the properties
Page 290 and 291: 8. When the format operation comple
Page 292 and 293: wprintf( L" Volume Id: %s\n", buffe
Page 294 and 295: 6 Appendix A: Full IDLFor ease of i
Page 296 and 297: VDSBusTypeiScsi = 0x00000009,VDSBus
Page 298 and 299: } VDS_VOLUME_TYPE;typedef enum _VDS
Page 300 and 301: VDS_OBJECT_IDULONGLONG} VDS_PARTITI
Page 302 and 303: typedef struct _VDS_STORAGE_DEVICE_
Page 304 and 305: } GptPartInfo;[default];};} CREATE_
Page 306 and 307: VDS_PS_UNKNOWN = 0x00000000,VDS_PS_
Page 308 and 309: typedef struct _VDS_FILE_SYSTEM_TYP
Page 310 and 311: typedef struct _VDS_PACK_PROP{VDS_O
Page 312 and 313: OPEN_VIRTUAL_DISK_FLAG_NO_PARENTS =
Page 314 and 315: );[out] unsigned long *pcFetched[he
Page 316 and 317: HRESULT QueryFileSystemTypes([out,
Page 318 and 319: *pInitiatorSharedSecret,[in] VDS_OB
Page 320 and 321: }[]HRESULT CreatePack([out] IVdsPac
Page 322 and 323: HRESULT CreateVolume([in] VDS_VOLUM
Page 324 and 325: [object,uuid(8F4B2F5D-EC15-4357-992
Page 326 and 327: uuid(9882f547-cfc3-420b-9750-00dfbe
Page 328 and 329: );[helpstring("method QueryPlexes")
Page 330 and 331: );[helpstring("method Mount")]HRESU
Page 332 and 333: [object,uuid(4daa0135-e1d1-40f1-aaa
Page 334 and 335: 7 Appendix B: Product BehaviorThe i
Page 336 and 337: Supported operating system versionI
Page 340 and 341: overwritten with "UDF". The first e
Page 342 and 343: Section 3.1.7.1: This interface is
Page 344 and 345: Section 3.4.5.2.18.5: The Windows i
Page 346 and 347: On Windows Server 2003, Windows Ser
Page 348 and 349: incorrectly returns 0 in the pulPer
Page 350 and 351: Section 3.4.5.2.38.3: Windows does
Page 352 and 353: •Protocol syntax updated due to p
Page 354 and 355: IVdsVolumeMF (section 2.2.2.15 81,
Page 356 and 357: enumerations 70interface 130methods
Page 358 and 359: PVDS_REPARSE_POINT_PROP 81PVDS_VDIS
Page 360: VDS_SERVICE_NOTIFICATION structure
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[MS-VDS]: Virtual Disk Service (VDS) Protocol Specification

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