Hi, Running *yum install docker* seems to be complaining about the *libdevmapper**.so. *See the full error. Loaded plugins: langpacks Resolving Dependencies --> Running transaction check ---> Package docker.x86_64 0:1.8.2-10.sl7 will be installed --> Processing Dependency: docker-selinux >= 1.8.2-10.sl7 for package: docker-1.8.2-10.sl7.x86_64 --> Processing Dependency: libdevmapper.so.1.02(DM_1_02_97)(64bit) for package: docker-1.8.2-10.sl7.x86_64 --> Running transaction check ---> Package docker.x86_64 0:1.8.2-10.sl7 will be installed --> Processing Dependency: libdevmapper.so.1.02(DM_1_02_97)(64bit) for package: docker-1.8.2-10.sl7.x86_64 ---> Package docker-selinux.x86_64 0:1.8.2-10.sl7 will be installed --> Finished Dependency Resolution You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest I've Package 7:device-mapper-libs-1.02.93-3.el7_1.1.x86_64 installed. Is this a bug? Running 7.1 SL Thanks! Valentin