feat(ilm): relocate hot objects across server pools by GET frequency

Keep NVMe/HDD pool pairs useful without remote tiering: promote objects that
are read often, demote previously moved objects once they go idle, and leave
the feature off until operators set a two-pool topology.

Signed-off-by: mr javad seydi <seydi.birjand@gmail.com>

cmd/metrics-v3.go

@@ -390,6 +390,17 @@ func newMetricGroups(r *prometheus.Registry) *metricsV3Collection {
 			ilmTransitionActiveTasksMD,
 			ilmTransitionPendingTasksMD,
 			ilmTransitionMissedImmediateTasksMD,
+			ilmAccessTierActiveTasksMD,
+			ilmAccessTierPendingTasksMD,
+			ilmAccessTierPromotionsTotalMD,
+			ilmAccessTierDemotionsTotalMD,
+			ilmAccessTierBytesMovedTotalMD,
+			ilmAccessTierFailuresTotalMD,
+			ilmAccessTierSkippedWatermarkMD,
+			ilmAccessTierSkippedMaxSizeMD,
+			ilmAccessTierSkippedQuotaMD,
+			ilmAccessTierHotBytesMD,
+			ilmAccessTierSamplesDroppedMD,
 			ilmVersionsScannedMD,
 		},
 		loadILMMetrics,