Permament fix for /run/shm creation in Ubuntu LXC guest systems (oneiric..precise)

lxc-shm-fix.sh

#!/bin/bash
# https://bugs.launchpad.net/launchpad/+bug/974584

# common oneiric-lxc-guest bug
grep --silent "/run/shm" /lib/init/fstab || echo "none            /run/shm                  tmpfs           nosuid,nodev                      0 0" >> /lib/init/fstab
mkdir -p /run/shm
mount /run/shm

# required for systems after manual dirty fixing
test -L /dev/shm || ( umount /dev/shm ; rm -fr /dev/shm && ln -s /run/shm /dev/ )

# just a test
python -c "import multiprocessing ; mp = multiprocessing.Pool(2)" && echo "everything is fine"