[Bug 1216151] New: Docker fails mounting a volume as readonly on files located under /usr

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1216151

            Bug ID: 1216151
           Summary: Docker fails mounting a volume as readonly on files
                    located under /usr
           Product: Fedora
           Version: 21
         Component: docker-io
          Assignee: ichavero(a)redhat.com
          Reporter: yann.robert(a)anantaplex.fr
        QA Contact: extras-qa(a)fedoraproject.org
                CC: adimania(a)gmail.com, admiller(a)redhat.com,
                    golang(a)lists.fedoraproject.org, hushan.jia(a)gmail.com,
                    ichavero(a)redhat.com, jchaloup(a)redhat.com,
                    jperrin(a)centos.org, lsm5(a)redhat.com,
                    mattdm(a)redhat.com, mgoldman(a)redhat.com,
                    miminar(a)redhat.com, s(a)shk.io, thrcka(a)redhat.com,
                    vbatts(a)redhat.com



Description of problem:

Docker fails to run a container with a volume on files located under /usr (or
on symbolic link to files located under /usr) if the ":ro" specification is
used to mount it as readonly

Version-Release number of selected component (if applicable):
docker-io-1.6.0-2.git3eac457.fc21.x86_64

How reproducible: 100%


Steps to Reproduce:
1. install docker package docker-io-1.6.0-2.git3eac457.fc21.x86_64
2. restart the docker service
3. run the following command
docker run -ti -v /etc/localtime:/etc/localtime:ro busybox echo hello


Actual results:
get exit code 1
and message FATA[0000] Error response from daemon: Cannot start container
4bb87515e4eb828b295eb4718a7159c958a1154ed839b29fd213a597b91a200e: [8] System
error: Relabeling content in /usr is not allowed.

Expected results:
get exit code 0
and message "hello"

Additional info:

please refer to initial bug report on docker repository at github
https://github.com/docker/docker/issues/12811

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