Fix single disk distributed deployment (#19758)

Signed-off-by: Harshavardhana <harsha@minio.io>

stable/minio/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
-description: MinIO is a high performance distributed object storage server, designed for large-scale private cloud infrastructure.
+description: MinIO is a high performance data infrastructure for machine learning, analytics and application data workloads.
 name: minio
-version: 4.0.1
+version: 4.0.2
 appVersion: master
 keywords:
 - storage

stable/minio/templates/statefulset.yaml

@@ -81,6 +81,7 @@ spec:
           {{- end  }}
           volumeMounts:
             {{- if $penabled }}
+            {{- if (gt $drivesPerNode 1) }}
             {{- range $i := until $drivesPerNode }}
             - name: export-{{ $i }}
               mountPath: {{ $mountPath }}-{{ $i }}
@@ -88,6 +89,13 @@ spec:
               subPath: {{ $subPath }}
               {{- end }}
             {{- end }}
+            {{- else }}
+            - name: export
+              mountPath: {{ $mountPath }}
+              {{- if and $penabled $subPath }}
+              subPath: {{ $subPath }}
+              {{- end }}
+            {{- end }}
             {{- end }}
             - name: minio-config-dir
               mountPath: {{ .Values.configPath }}
@@ -161,6 +169,7 @@ spec:
         {{ end }}
 {{- if .Values.persistence.enabled }}
   volumeClaimTemplates:
+  {{- if gt $drivesPerNode 1 }}
     {{- range $diskId := until $drivesPerNode}}
     - metadata:
         name: export-{{ $diskId }}
@@ -172,6 +181,18 @@ spec:
         resources:
           requests:
             storage: {{ $psize }}
-     {{- end }}
-{{ end }}
+    {{- end }}
+  {{- else }}
+    - metadata:
+        name: export
+      spec:
+        accessModes: [ {{ $accessMode | quote }} ]
+        {{- if $storageClass }}
+        storageClassName: {{ $storageClass }}
+        {{- end }}
+        resources:
+          requests:
+            storage: {{ $psize }}
+  {{- end }}
+{{- end }}
 {{- end }}