I want to be able to use /tmp for holding backups with CD as
eventual destination, and not overflow.
Are you expecting your CD images to go (temporarily) to /tmp out of choice,
or as side-effect? In other words, are you actually planning on using /tmp
for that, or is there a piece of software that you are using to do your
backups that you know will end up filling up /tmp?
I am asking, because /tmp, as far as I know, is used for different purpose.
For one, if I am not mistaken, its contents is not (guaranteed to be)
preserved across a reboot. Most transient files (but not as transient as
the stuff in /tmp), such as print spool, mail spool, logs, bind slave maps,
etc, end up under /var. It seems that Fedora also places ftp and httpd, as
well as many trees under /var.
If you have the choice of where to temporarily place the CD images, you
could stick them under /var; or you could put them inside of /home/<you>; or
you could have a dedicated root-level tree, e.g., /space. /tmp just seems
awkward for something as precious as a backup CD image, even if it's there
only temporarily...
My $0.02.
--Marcin
