VMs need PersistentVolumes. On SNO without ODF (too resource-intensive for a single node), the LVM Storage Operator is the recommended solution. It creates a thin-pool-based StorageClass on a free block device. Thin provisioning enables fast PVC clones — essential for VM golden-image workflows. Prerequisite: at least one free, unused block device on the node.
1Identify free block device: in this example it is nvme1n1 (894.3G, no partitions)
nvme0n1 is the OCP system disk (has /boot + /sysroot) — do not touch it!2OpenShift Console → Ecosystem → Software Catalog → Operators → search for
LVM Storage → install3Namespace:
openshift-lvm-storage (default), channel: stable-4.214Create LVMCluster CR (Commands/YAML tab — path
/dev/nvme1n1 already set)5Watch status:
watch oc get lvmcluster -n openshift-lvm-storage6Mark StorageClass
lvms-vg1 as default7Create VolumeSnapshotClass for VM snapshots — include label
velero.io/csi-volumesnapshot-class=true (required when using OADP/PRE-13, otherwise PVC snapshots fail in OADP backups)8Create test PVC — NOTE: stays Pending until a consumer exists (WaitForFirstConsumer)
9Create test pod — forces PVC binding → status changes to Bound
10Clean up: delete pod and PVC