diff --git a/pkg/csi/api/client.go b/pkg/csi/api/client.go
index 4404aa1..01fdfdd 100644
--- a/pkg/csi/api/client.go
+++ b/pkg/csi/api/client.go
@@ -58,7 +58,11 @@ func (c *Client) CreateVolume(ctx context.Context, req provisioner.CreateVolumeR
 }
 
 func (c *Client) DeleteVolume(ctx context.Context, volumeID string) error {
-	return c.doJSON(ctx, http.MethodDelete, "/v1/volumes/"+escapePath(volumeID), nil, nil)
+	err := c.doJSON(ctx, http.MethodDelete, "/v1/volumes/"+escapePath(volumeID), nil, nil)
+	if isNotFound(err) {
+		return nil
+	}
+	return err
 }
 
 func (c *Client) VolumeExists(ctx context.Context, volumeID string) (bool, error) {
diff --git a/pkg/csi/api/client_test.go b/pkg/csi/api/client_test.go
index bf09590..5ce87e8 100644
--- a/pkg/csi/api/client_test.go
+++ b/pkg/csi/api/client_test.go
@@ -60,3 +60,34 @@ func TestClientCreateVolume(t *testing.T) {
 		t.Fatalf("unexpected volume: %#v", vol)
 	}
 }
+
+func TestClientDeleteVolume(t *testing.T) {
+	t.Parallel()
+
+	const volumeID = "abc123/pvc-1"
+	deleted := false
+
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case r.Method == http.MethodDelete && r.URL.Path == "/v1/volumes/abc123/pvc-1":
+			deleted = true
+			w.WriteHeader(http.StatusNoContent)
+		case r.Method == http.MethodDelete && r.URL.Path == "/v1/volumes/missing/pvc-1":
+			w.WriteHeader(http.StatusNotFound)
+		default:
+			t.Fatalf("unexpected request: %s %s", r.Method, r.URL.Path)
+		}
+	}))
+	t.Cleanup(srv.Close)
+
+	client := NewClient(ClientConfig{BaseURL: srv.URL})
+	if err := client.DeleteVolume(context.Background(), volumeID); err != nil {
+		t.Fatalf("DeleteVolume failed: %v", err)
+	}
+	if !deleted {
+		t.Fatal("expected delete request to reach backend")
+	}
+	if err := client.DeleteVolume(context.Background(), "missing/pvc-1"); err != nil {
+		t.Fatalf("DeleteVolume should treat 404 as success: %v", err)
+	}
+}
diff --git a/pkg/csi/driver/mount_other.go b/pkg/csi/driver/mount_other.go
index 7470aae..7d24f91 100644
--- a/pkg/csi/driver/mount_other.go
+++ b/pkg/csi/driver/mount_other.go
@@ -32,6 +32,14 @@ func bindMount(source, target string) error {
 	return m.Mount(source, target, "", []string{"bind"})
 }
 
+func isHostMounted(path string) bool {
+	return isMounted(path)
+}
+
+func unmountHost(path string) error {
+	return nil
+}
+
 func isMounted(path string) bool {
 	m := newMounter()
 	notMnt, err := m.IsLikelyNotMountPoint(path)