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https://issues.apache.org/jira/browse/MESOS-4291?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jie Yu updated MESOS-4291:
--------------------------
Sprint: Mesosphere Sprint 26, Mesosphere Sprint 27, Mesosphere Sprint 29
(was: Mesosphere Sprint 26, Mesosphere Sprint 27)
> fs::enter(rootfs) does not work if 'rootfs' is read only.
> ---------------------------------------------------------
>
> Key: MESOS-4291
> URL: https://issues.apache.org/jira/browse/MESOS-4291
> Project: Mesos
> Issue Type: Bug
> Reporter: Jie Yu
> Assignee: Jie Yu
> Labels: mesosphere, unified-containerizer-mvp
>
> I noticed this when I was testing the unified containerizer with the bind
> mount backend and no volumes.
> The current implementation of fs::enter will put the old root under
> /tmp/._old_root_.XXXXXX in the new rootfs. It assumes that /tmp is writable
> in the new rootfs, but this might not be true, especially if the bind mount
> backend is used.
> To solve the problem, what we can do is to mount tmpfs to /tmp in the new
> rootfs and umount it after pivot_root.
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