Please be aware that since the most recent systemd uploads /tmp is now
in tmpfs by default in Rawhide/F18.
For details please see this feature page:
If you have an explicit /tmp entry in fstab things should continue to
work the same as before. If you don't then you will now get a tmpfs on
/tmp by default.
This will most likely lead to a problem or two with software that isn't
happy about /tmp being small. We have created a tracker bug to keep
track of this:
If you have identified a bug that is triggered by /tmp being on tmpfs
now, please add it to this tracker bug!
For a bit of background on all of this and recommendations for
developers, please see:
Lennart Poettering - Red Hat, Inc.