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https://issues.apache.org/jira/browse/MESOS-3806?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Timothy Chen updated MESOS-3806:
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Labels: mesosphere (was: )
> 'mount --make-rslave /' does not work as expected on ubuntu 14.04
> -----------------------------------------------------------------
>
> Key: MESOS-3806
> URL: https://issues.apache.org/jira/browse/MESOS-3806
> Project: Mesos
> Issue Type: Bug
> Reporter: Jie Yu
> Assignee: Timothy Chen
> Labels: mesosphere
>
> The linux filesystem isolator rely on 'mount --make-rslve /' to make sure the
> mounts in the container (in a new mount namespace) does not propagate back
> to the host mount namespace.
> However, this command does not work as expected on ubuntu 14.04. Here is a
> simple experiment:
> {noformat}
> $ cat /proc/self/mountinfo
> 42 22 8:1 /home/vagrant/tmp /home/vagrant/tmp rw,relatime shared:1 - ext4
> /dev/disk/by-uuid/3af531bb-7c15-4e60-b23f-4853c47ccc91 rw,data=ordered
> 43 42 8:1 /home/vagrant/busybox /home/vagrant/tmp/mnt rw,relatime shared:2 -
> ext4 /dev/disk/by-uuid/3af531bb-7c15-4e60-b23f-4853c47ccc91 rw,data=ordered
> $ sudo unshare -m /bin/bash
> # cat /proc/self/mountinfo
> 70 45 8:1 /home/vagrant/tmp /home/vagrant/tmp rw,relatime shared:1 - ext4
> /dev/disk/by-uuid/3af531bb-7c15-4e60-b23f-4853c47ccc91 rw,data=ordered
> 71 70 8:1 /home/vagrant/busybox /home/vagrant/tmp/mnt rw,relatime shared:2 -
> ext4 /dev/disk/by-uuid/3af531bb-7c15-4e60-b23f-4853c47ccc91 rw,data=ordered
> # mount --make-rslave /home/vagrant/tmp
> # cat /proc/self/mountinfo
> 70 45 8:1 /home/vagrant/tmp /home/vagrant/tmp rw,relatime master:1 - ext4
> /dev/disk/by-uuid/3af531bb-7c15-4e60-b23f-4853c47ccc91 rw,data=ordered
> 71 70 8:1 /home/vagrant/busybox /home/vagrant/tmp/mnt rw,relatime shared:2 -
> ext4 /dev/disk/by-uuid/3af531bb-7c15-4e60-b23f-4853c47ccc91 rw,data=ordered
> {noformat}
> If you repeat the above commands on CentOS, the command works as expected.
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