Storage class for cache volumes

The following fields come under the parameters section of the storage class for cache volumes. The parameters section is mandatory in the storage class.

Table 1. Storage class fields and description for cache volumes
Field name	Required	Default	Description
`volBackendFs`	Yes	None	The name of the file system under which the fileset is created. When a file system is remotely mounted on an IBM Storage Scale container native cluster, it is the file system name on the IBM Storage Scale container native cluster.
`volumeType`	Yes	None	`volumeType: "cache"` indicates that the storage class is for cache volumes.
`csi.storage.k8s.io/provisioner-secret-name`	Yes	None	`csi.storage.k8s.io/provisioner-secret-name` indicates the secret name, which holds the information about an object storage bucket. It is recommended to use the value `${pvc.name}-secret` for this parameter.
`csi.storage.k8s.io/provisioner-secret-namespace`	Yes	None	`csi.storage.k8s.io/provisioner-secret-namespace` indicates the secret name, which holds the information about an object storage bucket. It is recommended to use the value `${pvc.namespace}` for this parameter.
`cacheMode`	No	The default is selected based on access mode in PersistentVolumeClaim. For more information, see PersistentVolumeClaim in Kubernetes resources.	`cacheMode` indicates the caching mode for cache volumes. The supported values for `cacheMode` are `readonly`, `exclusive`, `parallel`, and `detached`. For more information, see Caching modes.
`uid`	No	0 (root)	The user ID for the cache fileset.
`gid`	No	0 (root)	The group ID for the cache fileset.
`shared`	No	false	Use `shared: "true"`, if you have pods with non-root users that are using PersistentVolumeClaims with `ReadWriteMany (RWX)` access mode.