Point media apps at the real mediafs library via a static CephFS PV

Why:
The media apps must serve and manage the actual media library, not empty
volumes. That library already exists on the puppet-managed CephFS filesystem
mediafs (mounted by the VM/incus instances at /shared/media) and is in active
use, so the k8s apps must mount it in place rather than provision fresh storage.

How:
- Replace the two fresh movies/tvseries PVCs with one static CephFS
  PersistentVolume bound to mediafs and a single RWX media-library claim the
  whole stack shares.
- Set the PV reclaim policy to Retain and mark it staticVolume so ceph-csi only
  mounts the pre-existing storage and can never provision or reclaim it;
  deleting the PVC or PV cannot destroy the underlying library.
- Reuse the live csi-cephfs cluster parameters (clusterID cephfs_csi_ssd_ec_4_1
  for mon discovery, csi-cephfs/csi-cephfs-secret node-stage secret) with
  fsName mediafs and rootPath / (the mediafs root that maps to /shared/media).
- Mount the library into each app by subPath so the tree matches the VM
  layout: sonarr /mnt/tvseries (tvseries), radarr /mnt/movies (movies),
  jellyfin and nzbget both subtrees; prowlarr keeps no library mount. The
  jellyfin transcode PVC stays a fresh scratch volume.
- Whitelist PersistentVolume in the media AppProject so the cluster-scoped PV
  can sync.

apps/base/jellyfin/deployment.yaml

@@ -76,10 +76,12 @@ spec:
               mountPath: /cache
             - name: transcode
               mountPath: /transcode
-            - name: movies
+            - name: media-library
               mountPath: /mnt/movies
-            - name: tvseries
+              subPath: movies
+            - name: media-library
               mountPath: /mnt/tvseries
+              subPath: tvseries
       volumes:
         - name: config
           persistentVolumeClaim:
@@ -90,9 +92,6 @@ spec:
         - name: transcode
           persistentVolumeClaim:
             claimName: jellyfin-transcode
-        - name: movies
+        - name: media-library
           persistentVolumeClaim:
-            claimName: movies
+            claimName: media-library
-        - name: tvseries
-          persistentVolumeClaim:
-            claimName: tvseries

apps/base/media-apps/kustomization.yaml

@@ -6,5 +6,5 @@ resources:
   - namespace.yaml
   - serviceaccount.yaml
   - vaultauth.yaml
-  - pvc_movies.yaml
+  - pv_media-library.yaml
-  - pvc_tvseries.yaml
+  - pvc_media-library.yaml

apps/base/media-apps/pv_media-library.yaml

@@ -0,0 +1,41 @@
+---
+# Static CephFS PersistentVolume bound to the pre-existing, ACTIVELY-USED
+# puppet media library (ceph filesystem "mediafs", mounted by the VM/incus
+# instances at /shared/media). ceph-csi only mounts this volume; staticVolume
+# tells it the storage pre-exists and it must never provision or delete it.
+#
+# reclaimPolicy MUST stay Retain: deleting this PV or its PVC must NEVER be able
+# to reclaim or destroy the underlying CephFS data that the VM instances use.
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: media-apps-media-library
+spec:
+  accessModes:
+    - ReadWriteMany
+  capacity:
+    storage: 10Ti
+  # Load-bearing safety control. Do not change to Delete.
+  persistentVolumeReclaimPolicy: Retain
+  storageClassName: ""
+  volumeMode: Filesystem
+  # Pre-bind to the media-library claim so nothing else can grab this PV.
+  claimRef:
+    apiVersion: v1
+    kind: PersistentVolumeClaim
+    name: media-library
+    namespace: media-apps
+  csi:
+    driver: cephfs.csi.ceph.com
+    volumeHandle: media-apps-media-library-static
+    nodeStageSecretRef:
+      name: csi-cephfs-secret
+      namespace: csi-cephfs
+    volumeAttributes:
+      # clusterID maps (in the csi-cephfs ceph-csi-config) to the mon set that
+      # also serves mediafs; for a static volume only the mon lookup is used.
+      clusterID: cephfs_csi_ssd_ec_4_1
+      fsName: mediafs
+      staticVolume: "true"
+      # Filesystem-internal root of the library (mediafs root == /shared/media).
+      rootPath: /

apps/base/media-apps/pvc_media-library.yaml

@@ -0,0 +1,19 @@
+---
+# Claim bound to the static mediafs PV. RWX so every app in the stack shares the
+# one library. storageClassName "" + volumeName pin it to the static PV (no
+# dynamic provisioning). Deleting this claim cannot reclaim the data (PV is
+# Retain).
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: media-library
+  namespace: media-apps
+spec:
+  accessModes:
+    - ReadWriteMany
+  storageClassName: ""
+  volumeName: media-apps-media-library
+  resources:
+    requests:
+      storage: 10Ti
+  volumeMode: Filesystem

apps/base/media-apps/pvc_movies.yaml

@@ -1,16 +0,0 @@
----
-# Shared movies library, read-write-many across the *arr stack and jellyfin.
-# Greenfield-empty: a fresh CephFS volume, not the puppet mediafs library.
-apiVersion: v1
-kind: PersistentVolumeClaim
-metadata:
-  name: movies
-  namespace: media-apps
-spec:
-  accessModes:
-    - ReadWriteMany
-  resources:
-    requests:
-      storage: 500Gi
-  storageClassName: cephfs-raid5-retain
-  volumeMode: Filesystem

apps/base/media-apps/pvc_tvseries.yaml

@@ -1,16 +0,0 @@
----
-# Shared tvseries library, read-write-many across the *arr stack and jellyfin.
-# Greenfield-empty: a fresh CephFS volume, not the puppet mediafs library.
-apiVersion: v1
-kind: PersistentVolumeClaim
-metadata:
-  name: tvseries
-  namespace: media-apps
-spec:
-  accessModes:
-    - ReadWriteMany
-  resources:
-    requests:
-      storage: 500Gi
-  storageClassName: cephfs-raid5-retain
-  volumeMode: Filesystem

apps/base/nzbget/deployment.yaml

@@ -65,17 +65,16 @@ spec:
           volumeMounts:
             - name: config
               mountPath: /config
-            - name: movies
+            - name: media-library
               mountPath: /mnt/movies
-            - name: tvseries
+              subPath: movies
+            - name: media-library
               mountPath: /mnt/tvseries
+              subPath: tvseries
       volumes:
         - name: config
           persistentVolumeClaim:
             claimName: nzbget-config
-        - name: movies
+        - name: media-library
           persistentVolumeClaim:
-            claimName: movies
+            claimName: media-library
-        - name: tvseries
-          persistentVolumeClaim:
-            claimName: tvseries

apps/base/radarr/deployment.yaml

@@ -78,8 +78,9 @@ spec:
           volumeMounts:
             - name: config
               mountPath: /config
-            - name: movies
+            - name: media-library
               mountPath: /mnt/movies
+              subPath: movies
         - name: exportarr
           image: ghcr.io/onedr0p/exportarr:latest
           imagePullPolicy: IfNotPresent
@@ -134,6 +135,6 @@ spec:
         - name: config-template
           configMap:
             name: radarr-config-xml
-        - name: movies
+        - name: media-library
           persistentVolumeClaim:
-            claimName: movies
+            claimName: media-library

apps/base/sonarr/deployment.yaml

@@ -78,8 +78,9 @@ spec:
           volumeMounts:
             - name: config
               mountPath: /config
-            - name: tvseries
+            - name: media-library
               mountPath: /mnt/tvseries
+              subPath: tvseries
         - name: exportarr
           image: ghcr.io/onedr0p/exportarr:latest
           imagePullPolicy: IfNotPresent
@@ -134,6 +135,6 @@ spec:
         - name: config-template
           configMap:
             name: sonarr-config-xml
-        - name: tvseries
+        - name: media-library
           persistentVolumeClaim:
-            claimName: tvseries
+            claimName: media-library

argocd/projects/media.yaml

@@ -14,6 +14,8 @@ spec:
   clusterResourceWhitelist:
     - group: ''
       kind: Namespace
+    - group: ''
+      kind: PersistentVolume
   namespaceResourceWhitelist:
     - group: '*'
       kind: '*'