BUG1

添加CDSW节点报错
启动时刷以下异常日志：

+ exec /opt/cloudera/parcels/CDSW-1.2.0.p1.183075/docker/bin/dockerd --log-driver=journald -s devicemapper --storage-opt dm.basesize=100G --storage-opt dm.thinpooldev=/dev/mapper/docker-thinpool --storage-opt dm.use_deferred_removal=true --iptables=false
time="2018-02-02T14:41:02.342184784+08:00" level=info msg="libcontainerd: new containerd process, pid: 62748" 
Error starting daemon: error initializing graphdriver: devicemapper: Non existing device docker-thinpool

解决方案：
在CM上执行
prepare node
ok，
未完待续。。。