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

[Kay Sievers]

On Wed, Jul 16, 2014 at 2:57 PM, Zbigniew Jędrzejewski-Szmek
<zbyszek at in.waw.pl> wrote:
> On Wed, Jul 16, 2014 at 01:51:13PM +0200, Jon Severinsson 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.
> Yeah, especially that this makes it possible for the distribution to nicely
> use presets to override the default.

I don't think so. The common default of systemd should be /tmp on
tmpfs, and it should be statically enabled.

Tools should be fixed if needed to use /var/tmp for anything larger,
and not systemd use preset stuff to setup core mount points.

> I think that having /tmp on rootfs is legitimate, e.g. on memory
> starved systems.

The solution for such systems is called swap. :)

Kay