NTSTATUS 0xC05CFF07 (STATUS_SVHDX_RESERVATION

Status / error code:

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Description:

the current initiator is not permitted to issue this command under the active reservation.

Could be also:
Constant	Type	OS
ERROR_SVHDX_RESERVATION_CONFLICT	HRESULT	Windows

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STATUS_SVHDX_UNIT_ATTENTION_OPERATING_DEFINITION_CHANGED	STATUS_SVHDX_WRONG_FILE_TYPE

STATUS_SVHDX_RESERVATION_CONFLICT

The command conflicts with persistent-reservation ownership

STATUS_SVHDX_RESERVATION_CONFLICT means the current SCSI initiator is not allowed to perform the command because the shared disk has an active reservation that excludes it. This is an access-control result from the shared-storage protocol, not evidence that the VHDX file has a damaged filesystem.

In a guest cluster, a reservation conflict normally directs the caller to the cluster ownership and failover path. Trying to bypass it with direct file access or unsynchronized raw SCSI can defeat the very protection that prevents two nodes from writing incompatible data.

What to verify

Identify the command, initiator, reservation type, and reservation holder.
Validate that the cluster service sees the expected owner before retrying an application write.
Investigate unexpected conflicts as a potential stale node, split-brain, or configuration issue rather than a generic disk error.

References

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