Comment 2 for bug 1297044

This specific problem seems to have been introduced in Ubuntu in 2011 with the move to the /run filesystem.[1] Unless /etc/init/mounted-dev.conf is run the symlink of /dev/shm, created in that script, will not be created.

The reason /dev/shm is expected is because `ecryptfs-mount-private` executes mount.ecryptfs_private, which is built to expect /dev/shm to exist.[2]

[1]: http://metadata.ftp-master.debian.org/changelogs/main/m/mountall/oldstable_changelog
[2]: http://bazaar.launchpad.net/~ecryptfs/ecryptfs/trunk/view/head:/src/utils/mount.ecryptfs_private.c#L55