homelab/k8s/infra/longhorn/longhorn-storageclass.yaml

# Longhorn StorageClass - single unified `longhorn` storage class for the whole
# cluster. This is the only Longhorn class anything should reference.
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: longhorn
  annotations:
    storageclass.kubernetes.io/is-default-class: "true"
    description: "Longhorn distributed storage - 3 replicas, CP nodes only"
    argocd.argoproj.io/sync-options: Replace=true,Force=true
provisioner: driver.longhorn.io
allowVolumeExpansion: true
reclaimPolicy: Delete
volumeBindingMode: Immediate  # Immediate binding for StatefulSets (matches deployed config)
parameters:
  numberOfReplicas: "3"           # HA across all 3 CP nodes
  diskSelector: "storage"           # Only schedule on CP node disks, not GPU worker
  staleReplicaTimeout: "30"
  fromBackup: ""
  dataLocality: "disabled"        # Match deployed config (not best-effort)
  fsType: "ext4"
  disableRevisionCounter: "true"  # Performance optimization
  unmapMarkSnapChainRemoved: "ignored"