R-49 (D21 = B): a template may exclude a named volume from every backup (backup.volumes, class excluded) — Immich's model cache; guarded, red-proved; unreleased

controller/internal/stacks/manager.go

@@ -1313,6 +1313,7 @@ func deepCopyStack(s *Stack) Stack {
 		b.Userdata = append([]appbackup.BindSpec(nil), b.Userdata...)
 		b.HDD = append([]appbackup.BindSpec(nil), b.HDD...)
 		b.Import = append([]appbackup.BindSpec(nil), b.Import...)
+		b.Volumes = append([]appbackup.VolumeSpec(nil), b.Volumes...)
 		cp.Meta.Backup = &b
 	}
 

controller/internal/stacks/metadata.go

@@ -597,6 +597,17 @@ func (m *Manager) ClassifiedBinds(name string) ([]appbackup.ClassifiedBind, bool
 	return appbackup.ClassifyBinds(meta.Backup, binds)
 }
 
+// ExcludedDockerVolumes returns the Docker names of the stack's named volumes its template excludes from every backup
+// (R-49, D21 = B; appbackup.ExcludedDockerVolumes), and a sentence per template entry that was ignored.
+func (m *Manager) ExcludedDockerVolumes(name string) ([]string, []string) {
+	stack, ok := m.GetStack(name)
+	if !ok || name == SambaStackName {
+		return nil, nil
+	}
+	meta := LoadMetadata(filepath.Dir(stack.ComposePath))
+	return appbackup.ExcludedDockerVolumes(meta.Backup, stack.ComposePath)
+}
+
 // HasDeployField reports whether the app declares a deploy field for the given env var.
 //
 // R-351: the caller that needs this is the restore prefill, and the question it is really asking is