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STATUS_HV_NO_RESOURCES
The hypervisor lacks an operation resource, not necessarily guest RAM
STATUS_HV_NO_RESOURCES reports that Hyper-V could not obtain resources needed for the operation. Keep it distinct from STATUS_HV_INSUFFICIENT_MEMORY, which specifically names the hypervisor memory pool, and from buffer-capacity statuses that describe caller or message-queue buffers.
The diagnostic target is the operation’s resource class and current partition configuration. Record whether the request allocates a port, connection, VP-related structure, device-domain association, or another hypervisor-managed object. A guest free-memory reading cannot establish that the relevant hypervisor resource is available.
What to collect
- The exact hypercall, object type and allocation/request size.
- Current partition counts, active connections/ports and recent create/delete activity.
- Hypervisor implementation limits and feature availability reported to the partition.
- Whether cleanup of previous resources completed before a new allocation was attempted.
References
- Microsoft: virtualization-host partition lifecycle
- Microsoft: Hyper-V hypercall interface
- Linux source: Hyper-V guest initialization
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