Only one node extends the volume

[garenchan]

I am now using SeaweedFS with seaweedfs-csi-driver on K8S.

I created a persistent volume claim seaweedfs-dynamic with storage class seaweedfs-storage.

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: seaweedfs-dynamic
spec:
  storageClassName: "seaweedfs-storage"
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 100Gi

And I created 2 pods to use the pvc seaweedfs-dynamic, and these 2 pods were scheduled on 2 nodes.

kind: Pod
apiVersion: v1
metadata:
  name: pod1
spec:
  containers:
    - name: frontend
      image: busybox
      volumeMounts:
        - mountPath: "/data"
          name: seaweedfs-volume
      command: [ "sleep", "1000000" ]
  volumes:
    - name: seaweedfs-volume
      persistentVolumeClaim:
        claimName: seaweedfs-dynamic
  nodeName: 152-worker-0b2e90
---
kind: Pod
apiVersion: v1
metadata:
  name: pod2
spec:
  containers:
    - name: frontend
      image: busybox
      volumeMounts:
        - mountPath: "/data"
          name: seaweedfs-volume
      command: [ "sleep", "1000000" ]
  volumes:
    - name: seaweedfs-volume
      persistentVolumeClaim:
        claimName: seaweedfs-dynamic
  nodeName: 151-worker-7add5d

Finally, I tried to change the storage size of pvc to 200GB. But only the driver on node 152-worker-0b2e90 received the NodeExpandVolume request and expanded the volume.

I'm using version v1.16.13 of K8S and version v1.1.0 of the csi-resizer image .

# kubectl version
Client Version: version.Info{Major:"1", Minor:"22", GitVersion:"v1.22.2", GitCommit:"8b5a19147530eaac9476b0ab82980b4088bbc1b2", GitTreeState:"clean", BuildDate:"2021-09-15T21:38:50Z", GoVersion:"go1.16.8", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"16", GitVersion:"v1.16.13", GitCommit:"39a145ca3413079bcb9c80846488786fed5fe1cb", GitTreeState:"clean", BuildDate:"2020-07-15T16:10:14Z", GoVersion:"go1.13.9", Compiler:"gc", Platform:"linux/amd64"}
WARNING: version difference between client (1.22) and server (1.16) exceeds the supported minor version skew of +/-1

# cat value.yaml
k8s.gcr.io/sig-storage/csi-resizer:v1.1.0

[gnufied]

If you upgrade to v1.24 version of k8s, this behaviour should be fixed and expansion should be called on all nodes. See - kubernetes/kubernetes#108693