ODF Declarative Plan

This is the holding area for the ODF manifests we want to apply once that path is ready. They are staged for review, not applied by default.

Files:

• generated/odf/localvolumediscovery-auto-discover-devices.yaml
• generated/odf/localvolumeset-ceph-osd.yaml
• generated/odf/storagecluster-ocs-storagecluster.yaml

Current assumptions in these manifests:

• storage nodes are ocp-infra-01, ocp-infra-02, and ocp-infra-03
• those nodes carry the label cluster.ocs.openshift.io/openshift-storage=
• those nodes keep the node-role.kubernetes.io/infra= label, but the only required ODF taint is:
  • node.ocs.openshift.io/storage=true:NoSchedule
• LSO discovery currently reports one usable ODF disk per infra node:
  • /dev/sda
  • size about 1 TiB
• the root/OS disk is not selected

What each manifest does:

• LocalVolumeDiscovery

  • runs only on infra nodes
  • tolerates the ODF storage taint
  • is the known-good discovery config for this lab

• LocalVolumeSet

  • that creates a local block storage class named ceph-osd
  • targets only nodes labeled for ODF storage
  • tolerates the ODF storage taint so the provisioner runs on the storage nodes
  • constrains disk size to the expected 1 TiB data devices
  • uses maxDeviceCount: 1 so only the extra ODF disk is claimed per infra node

• StorageCluster

  • builds ODF on top of ceph-osd
  • targets only ODF-labeled infra nodes
  • tolerates the ODF storage taint
  • uses portable: false
  • uses replica: 3 for the three infra nodes

Before apply, confirm:

• cluster.ocs.openshift.io/openshift-storage= is present on all three infra nodes
• LocalVolumeDiscoveryResult for each infra node still shows /dev/sda as Available
• the live LocalVolumeSet named ceph-osd should be patched to match the saved manifest