Merge pull request #37 from yuvipanda/autoresizer

Automatically resize the filesystem if necessary

Author: GeorgianaElena

helm/jupyterhub-home-nfs/templates/deployment.yaml

@@ -69,6 +69,25 @@ spec:
           mountPath: /etc/jupyterhub-home-nfs/mounted-secret
         resources: {{ toJson .Values.quotaEnforcer.resources }}
       {{- end }}
+      {{- if .Values.autoResizer.enabled }}
+      - name: auto-xfs-resizer
+        # Use same image as quotaEnforcer as it has xfs_growfs
+        image: "{{ .Values.quotaEnforcer.image.repository }}:{{ .Values.quotaEnforcer.image.tag }}"
+        command:
+        - /bin/bash
+        - -c
+        - |
+          while true; do
+            xfs_growfs /export
+            sleep 5m
+          done
+        securityContext:
+          privileged: true
+        volumeMounts:
+        - name: home-directories
+          mountPath: /export
+        resources: {{ toJson .Values.autoResizer.resources }}
+      {{- end }}
       {{- if .Values.prometheusExporter.enabled }}
       - name: metrics-exporter
         image: "{{ .Values.prometheusExporter.image.repository }}:{{ .Values.prometheusExporter.image.tag }}"

helm/jupyterhub-home-nfs/values.schema.json

@@ -17,6 +17,13 @@
       },
       "required": ["image"]
     },
+    "autoResizer": {
+      "type": "object",
+      "properties": {
+        "enabled": { "type": "boolean" },
+        "resources": { "type": "object" }
+      }
+    },
     "quotaEnforcer": {
       "type": "object",
       "properties": {

helm/jupyterhub-home-nfs/values.yaml

@@ -32,6 +32,12 @@ nfsServer:
   allowedClients:
     - "127.0.0.1" # allow localhost
 
+# Automatic filesystem resizer, so increases in underlying disk size
+# are immediately reflected in available file system
+autoResizer:
+  enabled: true
+  resources: {}
+
 # Quota enforcer configuration
 # This container enforces the quota on the home directories