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hyperv: add Hyper-V Replication metrics subcollector - #2481

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hyperv: add Hyper-V Replication metrics subcollector#2481
jkroepke with Copilot wants to merge 2 commits into
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copilot/collect-hyperv-replication-metrics

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Copilot AI commented Aug 23, 2026 •
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The hyperv collector had no support for Hyper-V Replication metrics, forcing users to combine performancecounter configs and custom PowerShell/textfile collectors to monitor replication health and state.

Changes

internal/mi/types.go

  • Add NamespaceRootVirtualizationV2 (root/virtualization/v2) namespace constant

internal/collector/hyperv/hyperv_replica.go (new)

New replica subcollector collecting two data sources:

Hyper-V Replica VM perf counters (per-VM labels):

Metric Type
windows_hyperv_replica_compression_efficiency gauge
windows_hyperv_replica_resynchronized_bytes_total counter
windows_hyperv_replica_network_bytes_recv_total counter
windows_hyperv_replica_network_bytes_sent_total counter
windows_hyperv_replica_average_replication_latency_seconds gauge
windows_hyperv_replica_replication_latency_seconds gauge
windows_hyperv_replica_replication_count_total counter
windows_hyperv_replica_average_replication_size_bytes gauge
windows_hyperv_replica_last_replication_size_bytes gauge

root/virtualization/v2\Msvm_ReplicationRelationship WMI (per-VM labels):

Metric Values
windows_hyperv_replica_health 0=NotApplicable, 1=Ok, 2=Warning, 3=Critical
windows_hyperv_replica_state 0=Disabled … 12=TestFailoverStarted

internal/collector/hyperv/hyperv.go

  • Build now accepts and forwards miSession (was discarded with _)
  • replica subcollector registered and enabled by default in ConfigDefaults
  • collectorReplica embedded in Collector

Copilot AI linked an issue Aug 23, 2026 that may be closed by this pull request
Collect Hyper-V Replication Metrics #2423
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4 tasks
@jkroepke
feat(hyperv): add Hyper-V Replication metrics subcollector
dbeaab4 
- Add NamespaceRootVirtualizationV2 to internal/mi/types.go
- Create hyperv_replica.go with performance counter and WMI metrics
  for Hyper-V replication (health, state, size, latency, etc.)
- Register replica subcollector in hyperv.go Build function

Co-authored-by: jkroepke <1560587+jkroepke@users.noreply.github.com>
Copilot AI changed the title [WIP] Add Hyper-V replication metrics collection feat(hyperv): add Hyper-V Replication metrics subcollector Aug 23, 2026
Copilot AI requested a review from jkroepke August 23, 2026 22:35
@jkroepke jkroepke changed the title feat(hyperv): add Hyper-V Replication metrics subcollector hyperv: add Hyper-V Replication metrics subcollector Aug 23, 2026
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Collect Hyper-V Replication Metrics

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