I am working on CSI driver and need to support block volume (in addition to filesystem we already have)
When specifying volumeMode: Block NodeStageVolume and NodePublishVolume are not called (when removing volumeMode: Block and in POD change volumeDevices entry to volumeMounts it works fine)
PV description shows VolumeMode: Block
I added featuregates BlockVolume=true,CSIBlockVolume=true in kube-apiserver.yaml
but kubelet logs has reoccurring error:speifying that it is not enabled
reconciler.go:248] operationExecutor.MountVolume failed (controllerAttachDetachEnabled true) for volume … (UniqueName: …) pod “…” (UID: “…”) : MapVolume.NewBlockVolumeMapper initialization failed for volume “…” (UniqueName: “…”) pod “…” (UID: “…”) : CSIBlockVolume feature not enabled
We are using k8s 1.14.7. OS: CentOS
thank you
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: pvcraw67b
spec:
volumeMode: Block
storageClassName: sc67b
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
`
kind: Pod
apiVersion: v1
metadata:
name: podraw67b
spec:
containers:
- name: fc-container
image: fedora:26
command: ["/bin/sh", “-c”]
args: [ “tail -f /dev/null” ]
volumeDevices:
- devicePath: /dev/block
name: pvcrawvol67b
volumes:
- name: pvcrawvol67b
persistentVolumeClaim:
claimName: pvcraw67b