controllers: create VRCs

- Creates VolRepClass in response to changes made to DRClusterConfig
- k8s csi addons bump

Signed-off-by: raaizik <[email protected]>

bundle/manifests/ocs-client-operator.clusterserviceversion.yaml

@@ -309,11 +309,18 @@ spec:
           resources:
           - drclusterconfigs
           verbs:
+          - get
+          - list
+          - watch
+        - apiGroups:
+          - replication.storage.openshift.io
+          resources:
+          - volumereplicationclass
+          verbs:
           - create
           - delete
           - get
           - list
-          - update
           - watch
         - apiGroups:
           - security.openshift.io

cmd/main.go

@@ -31,6 +31,7 @@ import (
 	// Import all Kubernetes client auth plugins (e.g. Azure, GCP, OIDC, etc.)
 	// to ensure that exec-entrypoint and run can make use of them.
 	csiopv1a1 "github.com/ceph/ceph-csi-operator/api/v1alpha1"
+	replicationv1alpha1 "github.com/csi-addons/kubernetes-csi-addons/api/replication.storage/v1alpha1"
 	snapapi "github.com/kubernetes-csi/external-snapshotter/client/v8/apis/volumesnapshot/v1"
 	nbapis "github.com/noobaa/noobaa-operator/v5/pkg/apis"
 	configv1 "github.com/openshift/api/config/v1"
@@ -80,6 +81,7 @@ func init() {
 	utilruntime.Must(csiopv1a1.AddToScheme(scheme))
 	utilruntime.Must(nbapis.AddToScheme(scheme))
 	utilruntime.Must(ramenv1alpha1.AddToScheme(scheme))
+	utilruntime.Must(replicationv1alpha1.AddToScheme(scheme))
 	//+kubebuilder:scaffold:scheme
 }
 

config/rbac/role.yaml

@@ -266,11 +266,18 @@ rules:
   resources:
   - drclusterconfigs
   verbs:
+  - get
+  - list
+  - watch
+- apiGroups:
+  - replication.storage.openshift.io
+  resources:
+  - volumereplicationclass
+  verbs:
   - create
   - delete
   - get
   - list
-  - update
   - watch
 - apiGroups:
   - security.openshift.io

go.mod

@@ -1,10 +1,11 @@
 module github.com/red-hat-storage/ocs-client-operator
 
-go 1.22.5
+go 1.22.6
 
 replace (
 	github.com/portworx/sched-ops => github.com/portworx/sched-ops v0.20.4-openstorage-rc3 // required by Rook v1.12
 	github.com/red-hat-storage/ocs-client-operator/api => ./api
+	k8s.io/client-go v12.0.0+incompatible => k8s.io/client-go v0.29.0
 	vbom.ml/util => github.com/fvbommel/util v0.0.0-20180919145318-efcd4e0f9787
 )
 
@@ -19,22 +20,25 @@ exclude (
 
 require (
 	github.com/ceph/ceph-csi-operator/api v0.0.0-20240812072523-4d50cf3a32a0
+	github.com/csi-addons/kubernetes-csi-addons v0.10.0
 	github.com/go-logr/logr v1.4.2
 	github.com/kubernetes-csi/external-snapshotter/client/v8 v8.0.0
 	github.com/onsi/ginkgo v1.16.5
-	github.com/onsi/gomega v1.34.1
+	github.com/onsi/gomega v1.34.2
 	github.com/openshift/api v0.0.0-20240828125535-01b3675ba7b3
 	github.com/operator-framework/api v0.27.0
+	github.com/pkg/errors v0.9.1 // indirect
 	github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring v0.76.0
-	github.com/ramendr/ramen/api v0.0.0-20241001141243-29d6f22ad237
+	github.com/ramendr/ramen/api v0.0.0-20241105140706-d8587766acb3
 	github.com/red-hat-storage/ocs-client-operator/api v0.0.0-00010101000000-000000000000
 	github.com/red-hat-storage/ocs-operator/services/provider/api/v4 v4.0.0-20241113175552-201c936738fd
 	github.com/stretchr/testify v1.9.0
 	google.golang.org/grpc v1.66.0
-	k8s.io/api v0.31.0
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	k8s.io/api v0.31.1
 	k8s.io/apiextensions-apiserver v0.31.0
-	k8s.io/apimachinery v0.31.0
-	k8s.io/client-go v0.31.0
+	k8s.io/apimachinery v0.31.1
+	k8s.io/client-go v0.31.1
 	k8s.io/klog/v2 v2.130.1
 	k8s.io/utils v0.0.0-20240821151609-f90d01438635
 	sigs.k8s.io/controller-runtime v0.19.0
@@ -45,10 +49,8 @@ require (
 	github.com/klauspost/compress v1.17.9 // indirect
 	github.com/kube-object-storage/lib-bucket-provisioner v0.0.0-20221122204822-d1a8c34382f1 // indirect
 	github.com/openshift/custom-resource-status v1.1.3-0.20220503160415-f2fdb4999d87 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
 	gopkg.in/evanphx/json-patch.v4 v4.12.0 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
 	k8s.io/component-base v0.31.0 // indirect
 	sigs.k8s.io/container-object-storage-interface-api v0.1.0 // indirect
 )

go.sum

@@ -66,6 +66,8 @@ github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGX
 github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/csi-addons/kubernetes-csi-addons v0.10.0 h1:bBc6nb1oROz4RLhqoLFNeGymk2jIRXcx7LvAup9+3Jg=
+github.com/csi-addons/kubernetes-csi-addons v0.10.0/go.mod h1:nqi369YuYMIdysBbHjtYJcWFpcxujPot1HS6tnNWBV4=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
@@ -207,8 +209,8 @@ github.com/google/pprof v0.0.0-20201203190320-1bf35d6f28c2/go.mod h1:kpwsk12EmLe
 github.com/google/pprof v0.0.0-20210122040257-d980be63207e/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/google/pprof v0.0.0-20210226084205-cbba55b83ad5/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
 github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
-github.com/google/pprof v0.0.0-20240727154555-813a5fbdbec8 h1:FKHo8hFI3A+7w0aUQuYXQ+6EN5stWmeY/AZqtM8xk9k=
-github.com/google/pprof v0.0.0-20240727154555-813a5fbdbec8/go.mod h1:K1liHPHnj73Fdn/EKuT8nrFqBihUSKXoLYU0BuatOYo=
+github.com/google/pprof v0.0.0-20240827171923-fa2c70bbbfe5 h1:5iH8iuqE5apketRbSFBy+X1V0o+l+8NF1avt4HWl7cA=
+github.com/google/pprof v0.0.0-20240827171923-fa2c70bbbfe5/go.mod h1:vavhavw2zAxS5dIdcRluK6cSGGPlZynqzFM8NdvU144=
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
@@ -291,15 +293,15 @@ github.com/onsi/ginkgo v1.16.4/go.mod h1:dX+/inL/fNMqNlz0e9LfyB9TswhZpCVdJM/Z6Vv
 github.com/onsi/ginkgo v1.16.5 h1:8xi0RTUf59SOSfEtZMvwTvXYMzG4gV23XVHOZiXNtnE=
 github.com/onsi/ginkgo v1.16.5/go.mod h1:+E8gABHa3K6zRBolWtd+ROzc/U5bkGt0FwiG042wbpU=
 github.com/onsi/ginkgo/v2 v2.0.0/go.mod h1:vw5CSIxN1JObi/U8gcbwft7ZxR2dgaR70JSE3/PpL4c=
-github.com/onsi/ginkgo/v2 v2.19.0 h1:9Cnnf7UHo57Hy3k6/m5k3dRfGTMXGvxhHFvkDTCTpvA=
-github.com/onsi/ginkgo/v2 v2.19.0/go.mod h1:rlwLi9PilAFJ8jCg9UE1QP6VBpd6/xj3SRC0d6TU0To=
+github.com/onsi/ginkgo/v2 v2.20.2 h1:7NVCeyIWROIAheY21RLS+3j2bb52W0W82tkberYytp4=
+github.com/onsi/ginkgo/v2 v2.20.2/go.mod h1:K9gyxPIlb+aIvnZ8bd9Ak+YP18w3APlR+5coaZoE2ag=
 github.com/onsi/gomega v0.0.0-20170829124025-dcabb60a477c/go.mod h1:C1qb7wdrVGGVU+Z6iS04AVkA3Q65CEZX59MT0QO5uiA=
 github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
 github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1ybHNo=
 github.com/onsi/gomega v1.17.0/go.mod h1:HnhC7FXeEQY45zxNK3PPoIUhzk/80Xly9PcubAlGdZY=
 github.com/onsi/gomega v1.18.1/go.mod h1:0q+aL8jAiMXy9hbwj2mr5GziHiwhAIQpFmmtT5hitRs=
-github.com/onsi/gomega v1.34.1 h1:EUMJIKUjM8sKjYbtxQI9A4z2o+rruxnzNvpknOXie6k=
-github.com/onsi/gomega v1.34.1/go.mod h1:kU1QgUvBDLXBJq618Xvm2LUX6rSAfRaFRTcdOeDLwwY=
+github.com/onsi/gomega v1.34.2 h1:pNCwDkzrsv7MS9kpaQvVb1aVLahQXyJ/Tv5oAZMI3i8=
+github.com/onsi/gomega v1.34.2/go.mod h1:v1xfxRgk0KIsG+QOdm7p8UosrOzPYRo60fd3B/1Dukc=
 github.com/openshift/api v0.0.0-20240828125535-01b3675ba7b3 h1:Igew1pwW1pAiBQj0KP7Ms0SaPr8neAvbUhjBuTtJsSo=
 github.com/openshift/api v0.0.0-20240828125535-01b3675ba7b3/go.mod h1:OOh6Qopf21pSzqNVCB5gomomBXb8o5sGKZxG2KNpaXM=
 github.com/openshift/custom-resource-status v1.1.3-0.20220503160415-f2fdb4999d87 h1:cHyxR+Y8rAMT6m1jQCaYGRwikqahI0OjjUDhFNf3ySQ=
@@ -323,8 +325,8 @@ github.com/prometheus/common v0.57.0 h1:Ro/rKjwdq9mZn1K5QPctzh+MA4Lp0BuYk5ZZEVho
 github.com/prometheus/common v0.57.0/go.mod h1:7uRPFSUTbfZWsJ7MHY56sqt7hLQu3bxXHDnNhl8E9qI=
 github.com/prometheus/procfs v0.15.1 h1:YagwOFzUgYfKKHX6Dr+sHT7km/hxC76UB0learggepc=
 github.com/prometheus/procfs v0.15.1/go.mod h1:fB45yRUv8NstnjriLhBQLuOUt+WW4BsoGhij/e3PBqk=
-github.com/ramendr/ramen/api v0.0.0-20241001141243-29d6f22ad237 h1:ig6ePD0yopC5Qi5BRmhsIsKaOkdsGXTSmG3HTYIpquo=
-github.com/ramendr/ramen/api v0.0.0-20241001141243-29d6f22ad237/go.mod h1:nO6VM/+PEhcPGyFIQJdhY6ip822cA61PAy/s6IjenAA=
+github.com/ramendr/ramen/api v0.0.0-20241105140706-d8587766acb3 h1:q4UjNvv3jzKOeG/S+S1Ms2FV3WajBIE6266/7BIxdX4=
+github.com/ramendr/ramen/api v0.0.0-20241105140706-d8587766acb3/go.mod h1:O7VpTy8MMrh31DF4fv+2SZBSouAr8NlzIY4KYx7K75U=
 github.com/red-hat-storage/ocs-operator/services/provider/api/v4 v4.0.0-20241113175552-201c936738fd h1:WIdoP1CE/8yl9tnHFVY7g/h4ZDFk+2Y9Ri0PrHXfx1g=
 github.com/red-hat-storage/ocs-operator/services/provider/api/v4 v4.0.0-20241113175552-201c936738fd/go.mod h1:t9GJk69TGXABBF8fFPB+ImpbA9mJyRS86wW6+Qn8xHo=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
@@ -765,17 +767,17 @@ honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 k8s.io/api v0.23.3/go.mod h1:w258XdGyvCmnBj/vGzQMj6kzdufJZVUwEM1U2fRJwSQ=
 k8s.io/api v0.23.5/go.mod h1:Na4XuKng8PXJ2JsploYYrivXrINeTaycCGcYgF91Xm8=
-k8s.io/api v0.31.0 h1:b9LiSjR2ym/SzTOlfMHm1tr7/21aD7fSkqgD/CVJBCo=
-k8s.io/api v0.31.0/go.mod h1:0YiFF+JfFxMM6+1hQei8FY8M7s1Mth+z/q7eF1aJkTE=
+k8s.io/api v0.31.1 h1:Xe1hX/fPW3PXYYv8BlozYqw63ytA92snr96zMW9gWTU=
+k8s.io/api v0.31.1/go.mod h1:sbN1g6eY6XVLeqNsZGLnI5FwVseTrZX7Fv3O26rhAaI=
 k8s.io/apiextensions-apiserver v0.31.0 h1:fZgCVhGwsclj3qCw1buVXCV6khjRzKC5eCFt24kyLSk=
 k8s.io/apiextensions-apiserver v0.31.0/go.mod h1:b9aMDEYaEe5sdK+1T0KU78ApR/5ZVp4i56VacZYEHxk=
 k8s.io/apimachinery v0.23.3/go.mod h1:BEuFMMBaIbcOqVIJqNZJXGFTP4W6AycEpb5+m/97hrM=
 k8s.io/apimachinery v0.23.5/go.mod h1:BEuFMMBaIbcOqVIJqNZJXGFTP4W6AycEpb5+m/97hrM=
-k8s.io/apimachinery v0.31.0 h1:m9jOiSr3FoSSL5WO9bjm1n6B9KROYYgNZOb4tyZ1lBc=
-k8s.io/apimachinery v0.31.0/go.mod h1:rsPdaZJfTfLsNJSQzNHQvYoTmxhoOEofxtOsF3rtsMo=
+k8s.io/apimachinery v0.31.1 h1:mhcUBbj7KUjaVhyXILglcVjuS4nYXiwC+KKFBgIVy7U=
+k8s.io/apimachinery v0.31.1/go.mod h1:rsPdaZJfTfLsNJSQzNHQvYoTmxhoOEofxtOsF3rtsMo=
 k8s.io/client-go v0.23.5/go.mod h1:flkeinTO1CirYgzMPRWxUCnV0G4Fbu2vLhYCObnt/r4=
-k8s.io/client-go v0.31.0 h1:QqEJzNjbN2Yv1H79SsS+SWnXkBgVu4Pj3CJQgbx0gI8=
-k8s.io/client-go v0.31.0/go.mod h1:Y9wvC76g4fLjmU0BA+rV+h2cncoadjvjjkkIGoTLcGU=
+k8s.io/client-go v0.31.1 h1:f0ugtWSbWpxHR7sjVpQwuvw9a3ZKLXX0u0itkFXufb0=
+k8s.io/client-go v0.31.1/go.mod h1:sKI8871MJN2OyeqRlmA4W4KM9KBdBUpDLu/43eGemCg=
 k8s.io/code-generator v0.20.1/go.mod h1:UsqdF+VX4PU2g46NC2JRs4gc+IfrctnwHb76RNbWHJg=
 k8s.io/code-generator v0.23.3/go.mod h1:S0Q1JVA+kSzTI1oUvbKAxZY/DYbA/ZUb4Uknog12ETk=
 k8s.io/component-base v0.31.0 h1:/KIzGM5EvPNQcYgwq5NwoQBaOlVFrghoVGr8lG6vNRs=

internal/controller/storageclaim_controller.go

@@ -20,15 +20,20 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"reflect"
 	"slices"
 	"strings"
 	"time"
 
+	"k8s.io/apimachinery/pkg/types"
+	"sigs.k8s.io/controller-runtime/pkg/event"
+
 	v1alpha1 "github.com/red-hat-storage/ocs-client-operator/api/v1alpha1"
 	"github.com/red-hat-storage/ocs-client-operator/pkg/templates"
 	"github.com/red-hat-storage/ocs-client-operator/pkg/utils"
 
 	csiopv1a1 "github.com/ceph/ceph-csi-operator/api/v1alpha1"
+	replicationv1alpha1 "github.com/csi-addons/kubernetes-csi-addons/api/replication.storage/v1alpha1"
 	"github.com/go-logr/logr"
 
 	snapapi "github.com/kubernetes-csi/external-snapshotter/client/v8/apis/volumesnapshot/v1"
@@ -109,12 +114,57 @@ func (r *StorageClaimReconciler) SetupWithManager(mgr ctrl.Manager) error {
 	}); err != nil {
 		return fmt.Errorf("unable to set up FieldIndexer for VSC csi driver name: %v", err)
 	}
+	enqueueStorageClaim := handler.EnqueueRequestsFromMapFunc(
+		func(_ context.Context, _ client.Object) []reconcile.Request {
+			sclaims := &v1alpha1.StorageClaimList{}
+			err := r.list(sclaims)
+			if err != nil {
+				r.log.Error(err, "Unable to list StorageClaim objects")
+				return []reconcile.Request{}
+			}
+
+			// Return name of the StorageClaim object
+			request := []reconcile.Request{}
+			for _, claim := range sclaims.Items {
+				request = append(request, reconcile.Request{
+					NamespacedName: types.NamespacedName{
+						Name: claim.Name,
+					},
+				})
+			}
+			return request
+		},
+	)
 
+	drClusterConfigPredicate := predicate.Funcs{
+		UpdateFunc: func(e event.UpdateEvent) bool {
+			if e.ObjectOld == nil || e.ObjectNew == nil {
+				return false
+			}
+			oldObj, ok := e.ObjectOld.(*ramenv1alpha1.DRClusterConfig)
+			if !ok {
+				return false
+			}
+			newObj, ok := e.ObjectNew.(*ramenv1alpha1.DRClusterConfig)
+			if !ok {
+				return false
+			}
+			return !reflect.DeepEqual(oldObj.Spec.ReplicationSchedules, newObj.Spec.ReplicationSchedules)
+		},
+		DeleteFunc: func(e event.DeleteEvent) bool {
+			if e.Object == nil {
+				return false
+			}
+			_, ok := e.Object.(*ramenv1alpha1.DRClusterConfig)
+			return ok || e.DeleteStateUnknown
+		},
+	}
 	generationChangePredicate := predicate.GenerationChangedPredicate{}
 	bldr := ctrl.NewControllerManagedBy(mgr).
 		For(&v1alpha1.StorageClaim{}, builder.WithPredicates(generationChangePredicate)).
 		Owns(&storagev1.StorageClass{}).
 		Owns(&snapapi.VolumeSnapshotClass{}).
+		Owns(&replicationv1alpha1.VolumeReplicationClass{}, builder.WithPredicates(generationChangePredicate)).
 		Owns(&csiopv1a1.ClientProfile{}, builder.WithPredicates(generationChangePredicate)).
 		Watches(
 			&extv1.CustomResourceDefinition{},
@@ -127,7 +177,8 @@ func (r *StorageClaimReconciler) SetupWithManager(mgr ctrl.Manager) error {
 		)
 
 	if r.AvailableCrds[drClusterConfigCRDName] {
-		bldr = bldr.Owns(&ramenv1alpha1.DRClusterConfig{}, builder.WithPredicates(generationChangePredicate))
+		bldr = bldr.Watches(&ramenv1alpha1.DRClusterConfig{}, enqueueStorageClaim,
+			builder.WithPredicates(drClusterConfigPredicate))
 	}
 
 	return bldr.Complete(r)
@@ -141,8 +192,9 @@ func (r *StorageClaimReconciler) SetupWithManager(mgr ctrl.Manager) error {
 //+kubebuilder:rbac:groups=snapshot.storage.k8s.io,resources=volumesnapshotclasses,verbs=get;list;watch;create;delete
 //+kubebuilder:rbac:groups=core,resources=persistentvolumes,verbs=get;list;watch
 //+kubebuilder:rbac:groups=snapshot.storage.k8s.io,resources=volumesnapshotcontents,verbs=get;list;watch
+//+kubebuilder:rbac:groups=ramendr.openshift.io,resources=drclusterconfigs,verbs=get;list;watch
+//+kubebuilder:rbac:groups=replication.storage.openshift.io,resources=volumereplicationclass,verbs=get;list;watch;create;delete
 //+kubebuilder:rbac:groups=csi.ceph.io,resources=clientprofiles,verbs=get;list;update;create;watch;delete
-//+kubebuilder:rbac:groups=ramendr.openshift.io,resources=drclusterconfigs,verbs=get;list;update;create;watch;delete
 
 // Reconcile is part of the main kubernetes reconciliation loop which aims to
 // move the current state of the cluster closer to the desired state.
@@ -424,6 +476,71 @@ func (r *StorageClaimReconciler) reconcilePhases() (reconcile.Result, error) {
 				if err != nil {
 					return reconcile.Result{}, fmt.Errorf("failed to create or update VolumeSnapshotClass: %s", err)
 				}
+			case "VolumeReplicationClass":
+				data := map[string]string{}
+				err = json.Unmarshal(resource.Data, &data)
+				if err != nil {
+					return reconcile.Result{}, fmt.Errorf("failed to unmarshal StorageClaim configuration response: %v", err)
+				}
+				data["replication.storage.openshift.io/replication-secret-namespace"] = r.OperatorNamespace
+				// generate a new clusterID for cephfs subvolumegroup, as
+				// storageclaim is clusterscoped resources using its
+				// hash as the clusterID
+				data["clusterID"] = r.storageClaimHash
+
+				if !r.AvailableCrds[drClusterConfigCRDName] {
+					continue
+				}
+				// sanity check that there's a single DRClusterConfig per cluster
+				drclusterconfigs := &ramenv1alpha1.DRClusterConfigList{}
+				err = r.list(drclusterconfigs)
+				if err != nil {
+					return reconcile.Result{}, fmt.Errorf("failed to get DRClusterConfigList: %v", err)
+				}
+				if len(drclusterconfigs.Items) == 0 {
+					continue
+				}
+				if len(drclusterconfigs.Items) > 1 {
+					return reconcile.Result{}, fmt.Errorf("there's more than one DRClusterConfig attached to the cluster")
+				}
+				vrcs := &replicationv1alpha1.VolumeReplicationClassList{}
+				err = r.list(vrcs)
+				if err != nil {
+					return reconcile.Result{}, fmt.Errorf("failed to get VolumeReplicationClassList: %v", err)
+				}
+				drclusterconfig := &drclusterconfigs.Items[0]
+				// check if Scheduling intervals have been deleted from DRClusterConfig
+				replicationSchedules := drclusterconfig.Spec.ReplicationSchedules
+				// delete VolumeReplicationClasses that have their respective replication schedule removed from DRClusterConfig
+				for _, vrc := range vrcs.Items {
+					if !slices.Contains(replicationSchedules, vrc.Spec.Parameters["schedulingInterval"]) {
+						err = r.Delete(r.ctx, &vrc)
+						if err != nil {
+							return reconcile.Result{}, fmt.Errorf("failed to delete VolumeReplicationClass %v: %v", vrc.Name, err)
+						}
+					}
+				}
+
+				for interval := range drclusterconfig.Spec.ReplicationSchedules {
+					volumeReplicationClass := &replicationv1alpha1.VolumeReplicationClass{}
+					volumeReplicationClass.Name = fmt.Sprintf("%s-%s", r.storageClaim.Name, drclusterconfig.Spec.ReplicationSchedules[interval])
+					if strings.Contains(resource.Name, "flatten") {
+						volumeReplicationClass.Name = fmt.Sprintf("%s-%s", volumeReplicationClass.Name, "flatten")
+					}
+					err = utils.CreateOrReplace(r.ctx, r.Client, volumeReplicationClass, func() error {
+						volumeReplicationClass.SetOwnerReferences(drclusterconfig.OwnerReferences)
+						data["schedulingInterval"] = drclusterconfig.Spec.ReplicationSchedules[interval]
+						utils.AddLabels(volumeReplicationClass, resource.Labels)
+						utils.AddAnnotation(volumeReplicationClass, storageClaimAnnotation, r.storageClaim.Name)
+						utils.AddAnnotations(volumeReplicationClass, resource.Annotations)
+						volumeReplicationClass.Spec.Parameters = data
+						volumeReplicationClass.Spec.Provisioner = templates.RBDDriverName
+						return nil
+					})
+					if err != nil {
+						return reconcile.Result{}, fmt.Errorf("failed to create or update VolumeReplicationClass: %s", err)
+					}
+				}
 			case "ClientProfile":
 				clientProfile := &csiopv1a1.ClientProfile{}
 				clientProfile.Name = r.storageClaimHash

pkg/utils/k8sutils.go

@@ -114,6 +114,16 @@ func AddAnnotation(obj metav1.Object, key string, value string) bool {
 	return false
 }
 
+// AddAnnotations adds values from newAnnotations to the keys on the supplied obj or overwrites values for existing keys on the obj
+func AddAnnotations(obj metav1.Object, newAnnotations map[string]string) {
+	annotations := obj.GetAnnotations()
+	if annotations == nil {
+		annotations = map[string]string{}
+		obj.SetAnnotations(annotations)
+	}
+	maps.Copy(annotations, newAnnotations)
+}
+
 func GetMD5Hash(text string) string {
 	hash := md5.Sum([]byte(text))
 	return hex.EncodeToString(hash[:])