<!-- STOP -- PLEASE READ! GitHub is not the right place for support requests. If you're looking for help, post your question on the [Kubernetes Slack ](http://slack.k8s.io/) Sig-Storage Channel. If the matter is security related, please disclose it privately via https://kubernetes.io/security/. --> 1. 在宿主机指定目录下建立存储目录 2. 用以支持类hostpath的能力 3. 在carina特性下可以统一管理本地目录的存储卷