问题描述
环境：
centos6.52.6.32-431.29.2.el6.x86_64docker version**Client version: 1.1.2Client API version: 1.13Go version (client): go1.2.2Git commit (client): d84a070/1.1.2Server version: 1.1.2Server API version: 1.13Go version (server): go1.2.2Git commit (server): d84a070/1.1.2**
在使用docker build --rm -t aaa .后报错
Sending build context to Docker daemon 2.56 kBSending build context to Docker daemon Step 0 : FROM centos:centos6 ---> 68eb857ffb51Step 1 : RUN yum install openssh-server -y2014/09/22 10:27:16 Unknown filesystem type on /dev/mapper/docker-8:3-785178-ad2bb13ca9392281568e9a87a1d91d7c2408c0a88b48c8a7c75554443154b82e-init
接着运行docker run --rm -ti centos:centos6 /bin/sh也报错
Error response from daemon: Unknown filesystem type on /dev/mapper/docker-8:3-785178-8d47e8e5b5481f325bb66974c758df40895c35d915c0ac11d892db36400c2453-init
如果在build前执行run可以正常使用。新人无从下手
问题解答
回答1：我前几天也遇到了这样的问题，你是不是宿主机用的redhad6或者centos6,是因为版本不兼容的问题。我后来改换centos7了然后装了docker创建镜像以及运行容器再也没有遇到这样的问题。
回答2：RedHat家族（包括CentOS和Fedora）系列安装Docker需要3.8以上的kernel，另外还需要装Device Mapper，此外，CentOS6和RedHat6还需要安装EPEL。列一个大概的步骤供你参考哈：
#检查内核版本uname -a Linux darknight.example.com 3.10.9-200.fc19.x86_64 #1 SMP Wed Aug↩21 19:27:58 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux#检查device-mapperls -l /sys/class/misc/device-mapper lrwxrwxrwx 1 root root 0 Oct 5 18:50 /sys/class/misc/device-↩mapper -> ../../devices/virtual/misc/device-mapper#如果没有安装device-mapper，请参考下面的命令：sudo yum install -y device-mapper #安装DeviceMappersudo modprobe dm_mod #加载DeviceMapper模块#CentOS6还需安装EPELsudo rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386↩/epel-release-6-8.noarch.rpm#最后安装Dockersudo yum -y install lxc-docker
