rbd: update Volume interface implementation for VolumeGroup APIs

Add support for adding and removing the RBD-image from a group.

Signed-off-by: Niels de Vos <ndevos@ibm.com>

internal/rbd/group.go

@@ -0,0 +1,58 @@
+/*
+Copyright 2024 The Ceph-CSI Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package rbd
+
+import (
+	"context"
+	"fmt"
+
+	librbd "github.com/ceph/go-ceph/rbd"
+
+	"github.com/ceph/ceph-csi/internal/rbd/types"
+)
+
+// AddToGroup adds the image to the group. This is called from the rbd_group
+// package.
+func (rv *rbdVolume) AddToGroup(ctx context.Context, vg types.VolumeGroup) error {
+	ioctx, err := vg.GetIOContext(ctx)
+	if err != nil {
+		return fmt.Errorf("could not get iocontext for volume group %q: %w", vg, err)
+	}
+
+	name, err := vg.GetName(ctx)
+	if err != nil {
+		return fmt.Errorf("could not get name for volume group %q: %w", vg, err)
+	}
+
+	return librbd.GroupImageAdd(ioctx, name, rv.ioctx, rv.RbdImageName)
+}
+
+// RemoveFromGroup removes the image from the group. This is called from the
+// rbd_group package.
+func (rv *rbdVolume) RemoveFromGroup(ctx context.Context, vg types.VolumeGroup) error {
+	ioctx, err := vg.GetIOContext(ctx)
+	if err != nil {
+		return fmt.Errorf("could not get iocontext for volume group %q: %w", vg, err)
+	}
+
+	name, err := vg.GetName(ctx)
+	if err != nil {
+		return fmt.Errorf("could not get name for volume group %q: %w", vg, err)
+	}
+
+	return librbd.GroupImageRemove(ioctx, name, rv.ioctx, rv.RbdImageName)
+}