[systemd-devel] [PATCH 08/10] units: make it possible to disable tmp.mount using systemctl

[Lennart Poettering]

On Wed, 16.07.14 13:51, Jon Severinsson (jon at severinsson.net) wrote:

> 
> > tmp.mount is part of our default expected setup and should behave like
> > this by default without any presets or configuration.
> 
> Which is why I made `make install` enable it, which wasn't in the original 
> patch for Debian.
> 
> > It can be overridden by an entry in fstab just fine. Why is that needed?
> 
> To my knowledge you can not create an fstab entry that would make /tmp not be 
> mounted at all but remain part of /. It can be done by masking the unit, but 
> enable/disable seems more appropriate than unmask/mask.

(Not that it matters, but actually you can. Just make it a bind mount on itself...)

> Note that when Debian tried to change the default from /tmp being part of / to 
> being a tmpfs several applications broke and the default was eventually 
> reverted.  Most applications have probably been fixed since then, but even if 
> we are able to change the default we will need a supported way of disabling 
> it.

I think for cases like this use "systemctl mask"...

Note that Fedora has been shipping with tmpfs on /tmp for a while now. A
few things broke, but they got fixed.

Lennart

-- 
Lennart Poettering, Red Hat