my-rook-config/deploy/examples/filesystem-test.yaml

#################################################################################################################
# Create a filesystem with settings for a test environment where only a single OSD is required.
#  kubectl create -f filesystem-test.yaml
#################################################################################################################

apiVersion: ceph.rook.io/v1
kind: CephFilesystem
metadata:
  name: myfs
  namespace: rook-ceph # namespace:cluster
spec:
  metadataPool:
    replicated:
      size: 1
      requireSafeReplicaSize: false
  dataPools:
    - name: replicated
      failureDomain: osd
      replicated:
        size: 1
        requireSafeReplicaSize: false
  preserveFilesystemOnDelete: false
  metadataServer:
    activeCount: 1
    activeStandby: false
---
# create default csi subvolume group
apiVersion: ceph.rook.io/v1
kind: CephFilesystemSubVolumeGroup
metadata:
  name: myfs-csi # lets keep the svg crd name same as `filesystem name + csi` for the default csi svg
  namespace: rook-ceph # namespace:cluster
spec:
  # The name of the subvolume group. If not set, the default is the name of the subvolumeGroup CR.
  name: csi
  # filesystemName is the metadata name of the CephFilesystem CR where the subvolume group will be created
  filesystemName: myfs
  # reference https://docs.ceph.com/en/latest/cephfs/fs-volumes/#pinning-subvolumes-and-subvolume-groups
  # only one out of (export, distributed, random) can be set at a time
  # by default pinning is set with value: distributed=1
  # for disabling default values set (distributed=0)
  pinning:
    distributed: 1 # distributed=<0, 1> (disabled=0)
    # export:      # export=<0-256> (disabled=-1)
    # random:      # random=[0.0, 1.0](disabled=0.0)