[Bug 1075717] Re: mounted-dev must not re-create consoles in a container

Serge Hallyn 1075717 at bugs.launchpad.net
Wed Nov 28 20:45:16 UTC 2012


As per discussion on #ubuntu-devel, lxc should run MAKEDEV in the
container before setting up its devices.

To do this, teh setup_autodev() function must be split up.  We'll first
mount all lxc filesystems (including a fresh /dev), then run MAKEDEV
console in the container, then do the rest of setup_autodev() if
lxc.autodev = 1.

** Also affects: lxc (Ubuntu)
   Importance: Undecided
       Status: New

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

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

** Changed in: lxc (Ubuntu)
     Assignee: (unassigned) => Serge Hallyn (serge-hallyn)

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https://bugs.launchpad.net/bugs/1075717

Title:
  mounted-dev must not re-create consoles in a container

Status in “lxc” package in Ubuntu:
  Triaged
Status in “mountall” package in Ubuntu:
  Triaged

Bug description:
  mounted-dev.conf always does MAKEDEV console.  MAKEDEV doesn't just
  make the devices, it first removes them.

  When a container starts, it sets up /dev/console and /dev/lxc[1-4] as
  bind mounts of ptys on the host, for use as lxc consoles.  If mounted-
  dev deletes and recreates those, then none of the lxc consoles work.

  A simple patch which stops it from breaking lxc consoles is at lp
  :~serge-hallyn/ubuntu/quantal/mountall/mountall-lxc .  However looking
  back at it, I think it would be ok to do a further check for whether
  /dev/console exists.  If it does not exist, then MAKEDEV console
  anyway.  This isn't necessary, just a thought.

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