add annotation to exclude a PVC directly from backup monitoring

README.md

@@ -41,6 +41,18 @@ spec:
         backup.velero.io/backup-volumes-excludes: tmp
 ```
 
+## Example PVC config
+
+To exclude a PVC that is not in use from backups annotate it as follows:
+
+```yaml
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  annotations:
+    backup.velero.io/backup-excluded: "true"
+```
+
 ## Example Alertmanager config
 
 ```

watcher/helpers.go

@@ -9,6 +9,7 @@ import (
 const (
 	BackupAnnotation  = "backup.velero.io/backup-volumes"
 	ExcludeAnnotation = "backup.velero.io/backup-volumes-excludes"
+	ExcludePVCAnnotation = "backup.velero.io/backup-excluded"
 )
 
 func listPodHandledPVCs(pod *v1.Pod, handledPvcNames *map[string]interface{}) {

watcher/watcher.go

@@ -84,6 +84,10 @@ func (w *Watcher) Update(namespace string) []PVCInfo {
 		return nil
 	}
 	for _, pvc := range pvcList {
+		annotations := pvc.GetAnnotations()
+		if v, ok := annotations[ExcludePVCAnnotation]; ok && v == "true" {
+			continue
+		}
 		pvcName := pvc.GetName()
 		if _, ok := handledPVCs[pvcName]; !ok {
 			missing = append(missing, PVCInfo{