centos6.5 2.6.32-431.29.2.el6.x86_64 docker version **Client version: 1.1.2 Client API version: 1.13 Go version (client): go1.2.2 Git commit (client): d84a070/1.1.2 Server version: 1.1.2 Server API version: 1.13 Go version (server): go1.2.2 Git commit (server): d84a070/1.1.2**
docker build --rm -t aaa .After reporting an error
Sending build context to Docker daemon 2.56 kB Sending build context to Docker daemon Step 0 : FROM centos:centos6 ---> 68eb857ffb51 Step 1 : RUN yum install openssh-server -y 2014/09/22 10:27:16 Unknown filesystem type on /dev/mapper/docker-8:3-785178-ad2bb13ca9392281568e9a87a1d91d7c2408c0a88b48c8a7c75554443154b82e-init
docker run --rm -ti centos:centos6 /bin/shAlso reported wrong
Error response from daemon: Unknown filesystem type on /dev/mapper/docker-8:3-785178-8d47e8e5b5481f325bb66974c758df40895c35d915c0ac11d892db36400c2453-init
If run is executed before build, it can be used normally.
The newcomer has no way to start.
I also encountered this kind of problem a few days ago. Are you the redhad6 or centos6 used by the host computer, because the versions are incompatible. I later changed centos7 and installed docker to create the image and run the container. I never encountered such problems again.