From f3ab4594599a7158d1b87ee9da1c3d80172a3c61 Mon Sep 17 00:00:00 2001
From: OdooSky Bot <bot@odoosky.cloud>
Date: Sat, 2 May 2026 22:06:03 +0300
Subject: [PATCH] Phase 3b: PVC dataSource + storageClassName plumbing (#347)

---
 templates/odoo-pvc.yaml             | 19 +++++++++++++++++++
 templates/postgres-statefulset.yaml | 12 ++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/templates/odoo-pvc.yaml b/templates/odoo-pvc.yaml
index 9504ac0..e4f52c7 100644
--- a/templates/odoo-pvc.yaml
+++ b/templates/odoo-pvc.yaml
@@ -6,6 +6,25 @@ metadata:
     {{- include "instance.labels" . | nindent 4 }}
 spec:
   accessModes: [ReadWriteOnce]
+  {{- if .Values.instance.storageClassName }}
+  # Tower stamps storageClassName when the destination cluster has
+  # Longhorn (or another snapshot-capable CSI). Empty here means
+  # bind to the cluster's default StorageClass — k3s default is
+  # local-path which doesn't support snapshots, so spawn-env /
+  # Refresh ↓ on those instances falls back to the S3 path.
+  # ADR 0003 phase 6.
+  storageClassName: {{ .Values.instance.storageClassName | quote }}
+  {{- end }}
+  {{- if and .Values.instance.dataSource .Values.instance.dataSource.filestore .Values.instance.dataSource.filestore.snapshotName }}
+  # Seed from VolumeSnapshot — Tower's VolumeClone path for
+  # spawn-env / Refresh ↓ (ADR 0003 phase 3+4). The snapshot must
+  # exist in the same namespace before this PVC is provisioned;
+  # Tower creates it before triggering the chart sync.
+  dataSource:
+    apiGroup: snapshot.storage.k8s.io
+    kind: VolumeSnapshot
+    name: {{ .Values.instance.dataSource.filestore.snapshotName | quote }}
+  {{- end }}
   resources:
     requests:
       storage: {{ include "instance.storage" (dict "Values" .Values "layer" "filestore") | quote }}
diff --git a/templates/postgres-statefulset.yaml b/templates/postgres-statefulset.yaml
index 4a1ae7c..16f6f58 100644
--- a/templates/postgres-statefulset.yaml
+++ b/templates/postgres-statefulset.yaml
@@ -64,6 +64,18 @@ spec:
         name: pgdata
       spec:
         accessModes: [ReadWriteOnce]
+        {{- if .Values.instance.storageClassName }}
+        storageClassName: {{ .Values.instance.storageClassName | quote }}
+        {{- end }}
+        {{- if and .Values.instance.dataSource .Values.instance.dataSource.database .Values.instance.dataSource.database.snapshotName }}
+        # Seed from VolumeSnapshot — Tower's VolumeClone path
+        # (ADR 0003 phase 3+4). The snapshot is taken from the
+        # source instance's `pgdata-<source>-pg-0` PVC.
+        dataSource:
+          apiGroup: snapshot.storage.k8s.io
+          kind: VolumeSnapshot
+          name: {{ .Values.instance.dataSource.database.snapshotName | quote }}
+        {{- end }}
         resources:
           requests:
             storage: {{ include "instance.storage" (dict "Values" .Values "layer" "database") | quote }}