thinpooldev
devicemapper: usage of loopback devices is strongly discouraged for production use. Use `--storage-opt dm.thinpooldev` to specify a custom block storage device.
centos7下docker排坑之WARNING: devicemapper: usage of loopback devices is strongly discouraged docker 安装完成之后，docker info命令下的WARING 首先有两种规避手段，一种是调整devicemap ......