ac0fb263c changed preserved guests to carry their real runtime status
("running") instead of the stringified aggregate status ("online"). The
three guest metric recording loops gate on Status == "running", so guests
carried forward while their node sits in the grace period started passing
that gate. The carried-forward projection has no counters, so every cycle
wrote CPU, disk and network zeroes into the history and the persistent
store. Sparklines and stored metrics showed a collapse to zero for a guest
Pulse could not see, rather than a gap. Memory escaped only by accident,
because the projection leaves usage unknown and historyMemoryUsage returns
the -1 sentinel.
Freshly built guests are stamped with the cycle's sample time while
preserved guests keep the LastSeen of the cycle that observed them, so that
field already distinguishes the two. All three loops now gate on
guestObservedInCycle: the efficient path in recordGuestMetrics, and the
traditional VM and container paths, which had the same defect inline.
The guard fails open when LastSeen is absent. Dropping a real sample is the
worse error and the harder one to notice, so no evidence means record.
Regression coverage asserts both directions, and both were verified by
breaking them: removing the guard reports the fabricated zero sample, and
inverting it reports the observed guest losing its sample entirely.
Clears the six dupl pairs in internal/monitoring:
- poll_providers.go: PVE/PBS/PMG listInstances / describeInstances /
connectionStatus closures collapse into generic sortedClientNames,
describeProviderInstances, and providerConnectionStatuses helpers; the
PBS/PMG adapters are now built by newPrefixedPollProvider from a
prefixedPollProviderSpec (prefix drives status keys, health keys, and
the fallback instance name).
- truenas_poller.go / vmware_poller.go: the Start scheduling loop
(double-start guard, stopped-channel handshake, sync+poll cadence)
moves to startPollerLoop, and the active-connection config policy
(enabled instances keyed by trimmed connection ID, defaults applied)
moves to loadActiveInstanceConfigs, both in the new
platform_poller_shared.go.
- monitor_polling_vm.go / monitor_polling_containers.go: traditional
polling now records guest series via the existing canonical
recordGuestMetric helper (io/network sentinels preserve the historical
cpu/memory/disk-only behavior on this path); the source-shape
guardrails in canonical_guardrails_test.go and
memory_source_catalog_test.go pin the new delegation.
- mock_metrics_history.go: native and TrueNAS disk seeding share one
seedDiskTelemetry closure.
Proof: new TestTrueNASPollerDoubleStartKeepsSingleLoop pins the shared
lifecycle loop; new TestSeedMockMetricsHistory_DiskTelemetryParityAcrossNativeAndTrueNAS
pins four-series parity for both disk sources. Contract Extension Points
name the shared wiring layer and poller scaffold.
Full internal/monitoring test suite passes.
Tighten v5-to-v6 upgrade safety, release installability, provider MSP mode handling, AI cost accounting, metrics flushing, and frontend guardrails for the v6.0.0 GA candidate.
rcourtman