4.4.1. Quick start example – PVC and POD

This quick start guide walks you through creating a BlockVolume using the NVMesh CSI Driver and using this volume from a POD.

Prerequisite

Before you continue, please make sure you have already installed the NVMesh CSI Driver on your cluster.

Create a PVC

Create a volume using the following PVC yaml:

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: block-pvc
spec:
  accessModes:
    - ReadWriteMany
  volumeMode: Block
  resources:
    requests:
      storage: 5Gi
  storageClassName: nvmesh-concatenated

Run the following command and check the output to make sure your volume was created successfully:

$kubectl get pvc
NAMESPACE   NAME        STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS          AGE
default     block-pvc   Bound    pvc-2ec86fdd-f656-4810-9a03-54fcd668a705   5Gi        RWX            nvmesh-concatenated   2s

Go to your NVMesh-Managment GUI. You should be able to see that a new volume was created.

Create a POD

Create a POD using the following PVC yaml:

apiVersion: v1
kind: Pod
metadata:
  name: block-volume-consumer-pod
  labels:
    app: block-volume-consumer-test
spec:
  containers:
    - name: block-volume-consumer
      image: excelero/qguide_block_volume_consumer
      args: ["/dev/my_block_dev"]
      volumeDevices:
        - name: block-volume
          devicePath: /dev/my_block_dev
  volumes:
    - name: block-volume
      persistentVolumeClaim:
        claimName: block-pvc

Run the following command. Check the output to make sure your pod was created successfully:

$ kubectl get pod block-volume-consumer-pod
NAME                        READY   STATUS    RESTARTS   AGE
block-volume-consumer-pod   1/1     Running   0          20s

Check the logs:

$ kubectl logs block-volume-consumer-pod
Writing to file /dev/my_block_dev
Read 15 bytes: "Excelero NVMesh"
- Sleeping
- Sleeping

The following indicates that the Container in the pod had successfully written and read from the block device /dev/my_block_dev