Create StorageClass

IOMesh provides a default StorageClass iomesh-csi-driver that provides PVs for pods through dynamic volume provisioning. Its parameters adopt the default values in the table below and cannot be modified. If you want a StorageClass with custom parameters, refer to the following.

Field	Description	Default (iomesh-csi-driver)
provisioner	The provisioner that determines what volume plugin is used for provisioning PVs.	com.iomesh.csi-driver
reclaimPolicy	Determines whether PV is retained when the PVC is deleted. Delete: When PVC is deleted, PV and the corresponding IOMesh volume will be deleted. Retain: When PVC is deleted, PV and the corresponding IOMesh volume will be retained.	delete
allowVolumeExpansion	Shows if volume expansion support is enabled.	true
csi.storage.k8s.io/fstype	The filesystem type, including xfs, ext2, ext3, ext4	ext4
replicaFactor	The number of replicas for PVs, either 2 or 3	2.
thinProvision	Shows the provisioning type. true for thin provisioning. false for thick provisioning.	true

Procedure

1. Create a YAML config sc.yaml and configure the parameters as needed.

   # Source: sc.yaml
   kind: StorageClass
   apiVersion: storage.k8s.io/v1
   metadata:
     name: iomesh-example-sc 
   provisioner: com.iomesh.csi-driver 
   reclaimPolicy: Delete # Specify the reclaim policy.
   allowVolumeExpansion: true 
   parameters:
     # Specify the filesystem type, including "ext4", "ext3", "ext2", and "xfs".
     csi.storage.k8s.io/fstype: "ext4"
     # Specify the replication factor, either "2" or "3".
     replicaFactor: "2"
     # Specify the provisioning type.
     thinProvision: "true"
   volumeBindingMode: Immediate
   

2. Apply the YAML config to create the StorageClass.

   kubectl apply -f sc.yaml 
   

3. View the newly created StorageClass.

   kubectl get storageclass iomesh-example-sc
   

   After running the command, you should see an example like:

   NAME                  PROVISIONER             RECLAIMPOLICY   VOLUMEBINDINGMODE   ALLOWVOLUMEEXPANSION   AGE
   iomesh-example-sc     com.iomesh.csi-driver   Delete          Immediate           true                   24h