feat(crd): upgrade script for refactoring the CRD

steps to upgrade :-

1. apply the crd yaml

$ kubectl apply -f upgrade/crd.yaml

2. run upgrade.sh

$ upgrade/upgrade.sh

3. upgrade the driver to v0.6

$ kubectl apply -f https://github.com/openebs/zfs-localpv/blob/v0.6.x/deploy/zfs-operator.yaml

4. if everything looks good run the cleanup.sh, it will clean old CRs and delete the CRD

$ upgrade/cleanup.sh

Signed-off-by: Pawan <pawan@mayadata.io>

upgrade/cleanup.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+set -e
+
+kubectl get zfsvolumes.openebs.io -n openebs -oyaml > volumes.yaml
+
+# remove the finalizer from the old CR
+sed -i "/zfs.openebs.io\/finalizer/d" volumes.yaml
+kubectl apply -f volumes.yaml
+
+# delete the old CR
+kubectl delete -f volumes.yaml
+
+# delete the CRD definition
+kubectl delete crd zfsvolumes.openebs.io
+
+
+kubectl get zfssnapshots.openebs.io -n openebs -oyaml > snapshots.yaml
+
+# remove the finalizer from the old CR
+sed -i "/zfs.openebs.io\/finalizer/d" snapshots.yaml
+kubectl apply -f snapshots.yaml
+
+# delete the old CR
+kubectl delete -f snapshots.yaml
+
+# delete the CRD definition
+kubectl delete crd zfssnapshots.openebs.io

upgrade/crd.yaml

@@ -0,0 +1,68 @@
+##############################################
+###########                       ############
+###########   ZFSVolume CRD       ############
+###########                       ############
+##############################################
+apiVersion: apiextensions.k8s.io/v1beta1
+kind: CustomResourceDefinition
+metadata:
+  name: volumes.zfs.openebs.io
+spec:
+  group: zfs.openebs.io
+  version: v1alpha1
+  scope: Namespaced
+  names:
+    plural: volumes
+    singular: volume
+    kind: Volume
+    shortNames:
+    - zfsvol
+    - zv
+  additionalPrinterColumns:
+  - JSONPath: .spec.poolName
+    name: ZPool
+    description: ZFS Pool where the volume is created
+    type: string
+  - JSONPath: .spec.ownerNodeID
+    name: Node
+    description: Node where the volume is created
+    type: string
+  - JSONPath: .spec.capacity
+    name: Size
+    description: Size of the volume
+    type: string
+  - JSONPath: .spec.volblocksize
+    name: volblocksize
+    description: volblocksize for the created zvol
+    type: string
+  - JSONPath: .spec.recordsize
+    name: recordsize
+    description: recordsize for the created zfs dataset
+    type: string
+  - JSONPath: .spec.fsType
+    name: Filesystem
+    description: filesystem created on the volume
+    type: string
+---
+##############################################
+###########                       ############
+###########   Snapshot CRD        ############
+###########                       ############
+##############################################
+
+apiVersion: apiextensions.k8s.io/v1beta1
+kind: CustomResourceDefinition
+metadata:
+  name: snapshots.zfs.openebs.io
+spec:
+  group: zfs.openebs.io
+  version: v1alpha1
+  scope: Namespaced
+  names:
+    plural: snapshots
+    singular: snapshot
+    kind: Snapshot
+    shortNames:
+    - zfssnapshot
+    - zfssnap
+---

upgrade/upgrade.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+set -e
+
+# ZFSVolumes: create the new CR with apiVersion as zfs.openebs.io and kind as Volume
+
+kubectl get zfsvolumes.openebs.io -n openebs -oyaml > volumes.yaml
+
+
+# update the group name to zfs.openebs.io
+sed -i "s/apiVersion: openebs.io/apiVersion: zfs.openebs.io/g" volumes.yaml
+# update the kind to Volume
+sed -i "s/kind: ZFSVolume/kind: Volume/g" volumes.yaml
+# create the new CR
+kubectl apply -f volumes.yaml
+
+rm volumes.yaml
+
+
+# ZFSSnapshots: create the new CR with apiVersion as zfs.openebs.io and kind as Snapshot
+
+kubectl get zfssnapshots.openebs.io -n openebs -oyaml > snapshots.yaml
+
+
+# update the group name to zfs.openebs.io
+sed -i "s/apiVersion: openebs.io/apiVersion: zfs.openebs.io/g" snapshots.yaml
+# update the kind to Snapshot
+sed -i "s/kind: ZFSSnapshot/kind: Snapshot/g" snapshots.yaml
+# create the new CR
+kubectl apply -f snapshots.yaml
+
+rm snapshots.yaml