public void maybeAddOfflineLogDir(String logDir, String msg, IOException e) {
        offline = true;
        log.error(path + " " + msg, e);
        inner.maybeAddOfflineLogDir(path, msg, e);
    }
PartitionLogDirFailureChannel will ignore the failed dir and only fail the partition.
core/src/main/scala/kafka/log/streamaspect/PartitionLogDirFailureChannel.java