- * The following log levels, in descending order of importance, are enabled by
- * default:
- *
- * - EMER: Not currently used.
- *
- * - ERR: A high-level operation or a subsystem failed. Attention is
- * warranted.
- *
- * - WARN: A low-level operation failed, but higher-level subsystems may be
- * able to recover.
- *
- * - INFO: Information that may be useful in retrospect when investigating
- * a problem.
- *
- * The lowest log level is not enabled by default:
- *
- * - DBG: Information useful only to someone with intricate knowledge of the
- * system, or that would commonly cause too-voluminous log output.
- */