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VDS_E_INVALID_ISCSI_PATH
This is the iSCSI-specific structural path error. For an iSCSI path, VDS_PATH_INFO uses a target portal ID, an initiator adapter ID, and a pointer to VDS_IPADDRESS for the initiator portal address. The published HRESULT definition identifies either an incorrect path type or a null initiator-portal properties pointer.
Why this state matters
The code is therefore more precise than a failed iSCSI login. VDS is rejecting provider-supplied path metadata before the path can be treated as a valid endpoint description. A target can still be logged in through another session or portal while one provider-returned path object is malformed.
Diagnostic focus
- Preserve the path ID, type, target portal ID, initiator adapter ID, and whether the initiator portal address pointer is null.
- Compare the malformed path with working iSCSI paths to the same LUN and provider.
- Check provider cache synchronization and reenumerate the hardware/provider object graph before retrying path-policy operations.
- Use initiator session diagnostics only after validating the path structure; login retries do not repair a null VDS path field.
Technical references
VDS_PATH_INFO · IVdsLunMpio · VDS_IPADDRESS · MS-VDS error codes · RFC 7143: iSCSI
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