rbd: remove SizeBytes from rbdSnapshot struct

as we are moving the VolSize to rbdImage struct
we should reuse the same instead of maintaining
one more field in rbdSnapshot struct.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

internal/rbd/controllerserver.go

@@ -1001,7 +1001,7 @@ func (cs *ControllerServer) CreateSnapshot(
 		return nil, status.Error(codes.Internal, err.Error())
 	}
 	rbdSnap.RbdImageName = rbdVol.RbdImageName
-	rbdSnap.SizeBytes = rbdVol.VolSize
+	rbdSnap.VolSize = rbdVol.VolSize
 	rbdSnap.SourceVolumeID = req.GetSourceVolumeId()
 	rbdSnap.RequestName = req.GetName()
 
@@ -1134,7 +1134,7 @@ func cloneFromSnapshot(
 
 	return &csi.CreateSnapshotResponse{
 		Snapshot: &csi.Snapshot{
-			SizeBytes:      rbdSnap.SizeBytes,
+			SizeBytes:      rbdSnap.VolSize,
 			SnapshotId:     rbdSnap.VolID,
 			SourceVolumeId: rbdSnap.SourceVolumeID,
 			CreationTime:   rbdSnap.CreatedAt,

internal/rbd/rbd_journal.go

@@ -176,7 +176,7 @@ func checkSnapCloneExists(
 	// Code from here on, rolls the transaction forward.
 
 	rbdSnap.CreatedAt = vol.CreatedAt
-	rbdSnap.SizeBytes = vol.VolSize
+	rbdSnap.VolSize = vol.VolSize
 	// found a snapshot already available, process and return its information
 	rbdSnap.VolID, err = util.GenerateVolID(ctx, rbdSnap.Monitors, cr, snapData.ImagePoolID, rbdSnap.Pool,
 		rbdSnap.ClusterID, snapUUID, volIDVersion)

internal/rbd/rbd_util.go

@@ -184,7 +184,6 @@ type rbdSnapshot struct {
 	SourceVolumeID string
 	ReservedID     string
 	RbdSnapName    string
-	SizeBytes      int64
 }
 
 // imageFeature represents required image features and value.