fix: remove parent dir in DeleteVolume

pkg/smb/controllerserver.go

@@ -232,7 +232,14 @@ func (d *Driver) DeleteVolume(ctx context.Context, req *csi.DeleteVolumeRequest)
 				return nil, status.Errorf(codes.Internal, "archive subdirectory(%s, %s) failed with %v", internalVolumePath, archivedInternalVolumePath, err)
 			}
 		} else {
-			klog.V(2).Infof("Removing subdirectory at %v", internalVolumePath)
+			rootDir := getRootDir(smbVol.subDir)
+			if rootDir != "" {
+				rootDir = filepath.Join(getInternalMountPath(d.workingMountDir, smbVol), rootDir)
+			} else {
+				rootDir = internalVolumePath
+			}
+
+			klog.V(2).Infof("removing subdirectory at %v on internalVolumePath %s", rootDir, internalVolumePath)
 			if err = os.RemoveAll(internalVolumePath); err != nil {
 				return nil, status.Errorf(codes.Internal, "failed to delete subdirectory: %v", err)
 			}

pkg/smb/smb.go

@@ -263,3 +263,9 @@ func appendMountOptions(mountOptions []string, extraMountOptions map[string]stri
 	}
 	return allMountOptions
 }
+
+// getRootDir returns the root directory of the given directory
+func getRootDir(path string) string {
+	parts := strings.Split(path, "/")
+	return parts[0]
+}

pkg/smb/smb_test.go

@@ -379,3 +379,44 @@ func TestAppendMountOptions(t *testing.T) {
 		}
 	}
 }
+
+func TestGetRootPath(t *testing.T) {
+	tests := []struct {
+		desc     string
+		dir      string
+		expected string
+	}{
+		{
+			desc:     "empty path",
+			dir:      "",
+			expected: "",
+		},
+		{
+			desc:     "root path",
+			dir:      "/",
+			expected: "",
+		},
+		{
+			desc:     "subdir path",
+			dir:      "/subdir",
+			expected: "",
+		},
+		{
+			desc:     "subdir path without leading slash",
+			dir:      "subdir",
+			expected: "subdir",
+		},
+		{
+			desc:     "multiple subdir path without leading slash",
+			dir:      "subdir/subdir2",
+			expected: "subdir",
+		},
+	}
+
+	for _, test := range tests {
+		result := getRootDir(test.dir)
+		if result != test.expected {
+			t.Errorf("Unexpected result: %s, expected: %s", result, test.expected)
+		}
+	}
+}