Hello U.Mutlu,
U.Mutlu [2019-03-30 20:34 +0100]:
> in /etc/default/tmpfs one can set /tmp to a tmpfs and give it a size from
> the avail RAM.
This was supported as an one-time migration from SysV init to systemd:
systemd (220-6) unstable; urgency=medium
[...]
* Stop installing tmp.mount by default; there are still situations where it
becomes active through dependencies from other units, which is surprising,
hides existing data in /tmp during runtime, and it isn't safe to have a
tmpfs /tmp on every install scenario. (Closes: #783509)
- d/rules: Ship tmp.mount in /usr/share/systemd/ instead of
/lib/systemd/systemd.
- systemd.postinst: When tmp.mount already was enabled, install tmp.mount
into /etc and keep it enabled.
- systemd.postinst: When enabling tmp.mount because of RAMTMP=yes, copy it
from /usr/share.
- Drop Don-t-mount-tmp-as-tmpfs-by-default.patch and
PrivateTmp-shouldn-t-require-tmpfs.patch, not necessary any more.
-- Martin Pitt <[email protected]> Thu, 11 Jun 2015 09:25:49 +0200
But it's not a permanent setting -- /etc/default is SysV specific for the most
part, and it really doesn't fit into sytemd's architecture (which put an end to
these completely ad-hoc config file stuff).
You are free to enable tmp.mount yourself, but indeed (as you did) the most
straightforward way is to simply enable it in fstab.
Martin
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