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STATUS_VHD_SHARED
Shared-mode use blocks an otherwise valid virtual-disk operation
STATUS_VHD_SHARED means the virtual disk is currently used in shared mode and the requested operation is not permitted in that mode. The restriction protects shared-storage coordination; an operation that is safe for one detached VHDX can be unsafe when several guest-cluster participants see the same logical disk.
Do not solve it by directly changing the VHDX file or by detaching it from one VM without coordinating the others. Determine whether the operation is supported for the active shared-disk model, and schedule maintenance through the Hyper-V and cluster workflow that owns the disk.
What to verify
- Identify each VM and host currently attached to the shared disk and the active guest-cluster role.
- Check whether the requested maintenance action is supported for Shared VHDX or VHD Set in the deployed version.
- Plan a coordinated outage or supported maintenance path when exclusive access is required.
References
- Microsoft: VHD Set files for guest clusters
- Microsoft: RawSCSIVirtualDisk
- T10: SCSI unit-attention condition handling
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