2.2.4.12 SVHDX_OPEN_DEVICE_CONTEXT Structure
The SVHDX_OPEN_DEVICE_CONTEXT packet is sent by the client to open the shared virtual disk.
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Version |
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HasInitiatorId |
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InitiatorId |
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Flags |
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OriginatorFlags |
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OpenRequestId |
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InitiatorHostNameLength |
InitiatorHostName (126 bytes) |
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Version (4 bytes): The version of the create context. It MUST be set to RSVD_ECP_CONTEXT_VERSION_1.
HasInitiatorId (1 byte): A Boolean value that, if set to TRUE (0x01), indicates that the message has a valid InitiatorId.
Reserved (3 bytes): This field MUST be set to zero when sent and MUST be ignored on receipt.
InitiatorId (16 bytes): A GUID that optionally identifies the initiator of the open request.
Flags (4 bytes): An application-provided value for the open.
OriginatorFlags (4 bytes): This field is used to indicate which component has originated or issued the operation. This field MUST be set to one of the following values:
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Name
Meaning
SVHDX_ORIGINATOR_PVHDPARSER
0x00000001
Shared virtual disk file to be opened as a virtual SCSI disk device
SVHDX_ORIGINATOR_VHDMP
0x00000004
Shared virtual disk file to be opened in underlying object store
OpenRequestId (8 bytes): A 64-bit value assigned by the client for an outgoing request.
InitiatorHostNameLength (2 bytes): The length, in bytes, of the InitiatorHostName. This value MUST be less than or equal to RSVD_MAXIMUM_NAME_LENGTH.
InitiatorHostName (126 bytes): A 126-byte buffer containing a Unicode UTF-16 string that specifies the computer name on which the initiator resides.