<p dir="auto">System:<br>
Gentoo linux<br>
btrfs root filesystm<br>
4.1.15-r1 kernel<br>
docker version: 1.9.1<br>
docker backend: btrfs<br>
kubernetes version: 1.1.7 commit:e4e6878</p>
<p dir="auto">Whenever I try to start a container which includes and emptyDir volume is gives the error<br>
Unable to mount volumes for pod "watch-cwd1k_default": operation not supported</p>
<p dir="auto">I have been, as of yet, unable to trouble shoot why this is occuring.</p>
<p dir="auto">I have a different kubernetes install which spans two seperate machines running centos 7.<br>
They also have a btrfs filesystem and utilise the btrfs driver, but they don't have this error.</p>
<p dir="auto">one of the big changes is that on the development machine, I am running the hyperkube so kubernetes is running in a container. On the cluster it is running in the base os.</p>
<p dir="auto">I'm setting up a <a href="http://kubernetes.io/v1.0/docs/getting-started-guides/docker-multinode.html" rel="nofollow">docker-multinode</a> k8s. I'm trying to mount a volume (in this case, a secret). Originally, I was getting this issue:<br>
<code class="notranslate">Unable to mount volumes for pod "service-registry-eccye_default": exit status 32</code><br>
I was on Slack yesterday, and <a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/users/cjcullen/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/cjcullen">@cjcullen</a> pointed out that I should be running the kubelet with the <code class="notranslate">--containerized</code> flag. I have added it and restarted the server and now I'm having this error:<br>
<code class="notranslate">Unable to mount volumes for pod "service-registry-4b682_default": fork/exec /nsenter: no such file or directory</code></p>
<p dir="auto">It looks like this issue was brought up in the past (<a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="79865554" data-permission-text="Title is private" data-url="https://github.com/kubernetes/kubernetes/issues/8734" data-hovercard-type="issue" data-hovercard-url="/kubernetes/kubernetes/issues/8734/hovercard" href="https://github.com/kubernetes/kubernetes/issues/8734">#8734</a>), but never resolved.</p>