public static void verifyNonNegativeDirSize(int[] sizes) {
    for (int size : sizes) {
      if (size < 0) {
        throw new IllegalArgumentException(
            String.format("Dir size cannot be negative : %s",
                size));
      }
    }
  }
Verify all directory sizes are positive
geode-core/src/main/java/org/apache/geode/internal/cache/DiskStoreAttributes.java