This is not currently done because there is not yet a good way for a
container to reboot/shutdown.  The current workaround involves the
container monitor watching the container's utmp which is in /var/run.
So if you mount tmpfs on top of /var or /var/run, then the monitor
cannot detect container reboot vs shutdown.

There is work in progress to add the kernel support needed for
containers to cleanly reboot and shut down,but that must pass through
the linux-kernel mailing list.

Since this bug is about fstab, a side effect of the reboot vs shutdown
issue, I'm going to mark it Triaged and low priority.

** Changed in: lxc (Ubuntu)
       Status: New => Triaged

** Changed in: lxc (Ubuntu)
   Importance: Undecided => Low

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https://bugs.launchpad.net/bugs/800520

Title:
  default fstab could be expanded

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