Editing the existing default CephFS data pool to replica-2

Use this procedure to edit the existing default CephFS pool to replica-2 and use it with the default CephFS storage class.

Procedure

  1. Patch the storagecluster to change default CephFS data pool to replica-2. 
     oc patch storagecluster ocs-storagecluster -n openshift-storage --type json --patch '[{ "op": "replace", "path": "/spec/managedResources/cephFilesystems/dataPoolSpec/replicated/size", "value": 2 }]'
  2. Run the following command to verify the CephFS details: 
     oc get cephfilesystem ocs-storagecluster-cephfilesystem -o=jsonpath='{.spec.dataPools}' | jq

    Example output:

    [
  {
    "application": "",
    "deviceClass": "ssd",
    "erasureCoded": {
      "codingChunks": 0,
      "dataChunks": 0
    },
    "failureDomain": "zone",
    "mirroring": {},
    "quotas": {},
    "replicated": {
      "replicasPerFailureDomain": 1,
      "size": 2,
      "targetSizeRatio": 0.49
    },
    "statusCheck": {
      "mirror": {}
    }
  }
]
  3. Run the following command to check the pool details: 
     ceph osd pool ls | grep filesystem

    Example output:

    ocs-storagecluster-cephfilesystem-metadata
ocs-storagecluster-cephfilesystem-data0