CDI is unable to perform a disk import into a block pvc (filesystem pvcs still import fine) in the current ocp 4.14. This issue began in the ocp 4.14 nightly on July 28th. The hypershift/kubevirt periodics caught this issue first, and then it blocked the hypershift repo from being able to merged due to the hypershift/kubevirt periodic failing.

Below is an example of the log message from the failing cdi importer pod.
I0728 06:21:38.998213 1 importer.go:103] Starting importer
E0728 06:21:38.999132 1 importer.go:133] exit status 1, blockdev: cannot open /dev/cdi-block-volume: Permission denied

kubevirt.io/containerized-data-importer/pkg/util.GetAvailableSpaceBlock
/remote-source/app/pkg/util/util.go:136
kubevirt.io/containerized-data-importer/pkg/util.GetAvailableSpaceByVolumeMode
/remote-source/app/pkg/util/util.go:106
main.main
/remote-source/app/cmd/cdi-importer/importer.go:131
runtime.main
/usr/lib/golang/src/runtime/proc.go:250
runtime.goexit
/usr/lib/golang/src/runtime/asm_amd64.s:1598
 

Note that this is not dependent on anything to do with Hypershift. It was merely the hypershift tests that caught this. This issue can be easily reproduced using the VM yaml below.

apiVersion: kubevirt.io/v1
kind: VirtualMachine
metadata:
  labels:
    kubevirt.io/vm: vm-alpine-datavolume
  name: vm-alpine-datavolume
spec:
  dataVolumeTemplates:
  - metadata:
      creationTimestamp: null
      name: alpine-dv
    spec:
      storage:
        resources:
          requests:
            storage: 2Gi
        volumeMode: Block
      source:
        registry:
          url: docker://quay.io/kubevirt/alpine-container-disk-demo:devel
          pullMethod: node
  running: true
  template:
    metadata:
      labels:
        kubevirt.io/vm: vm-alpine-datavolume
    spec:
      domain:
        devices:
          disks:
          - disk:
              bus: virtio
            name: datavolumedisk1
        resources:
          requests:
            memory: 128Mi
      terminationGracePeriodSeconds: 0
      volumes:
      - dataVolume:
          name: alpine-dv
        name: datavolumedisk1

This can be reproduced with the following environment

• Any OCP 4.14 nightly starting July 28th.
• CNV 4.14 pre-release
• Any storageclass capable of block mode