Am 10.07.20 um 14:08 schrieb H.Merijn Brand:
On Fri, 10 Jul 2020 13:51:10 +0200, Michal Kubecek <mkubecek@suse.cz> wrote:
On Fri, Jul 10, 2020 at 11:49:45AM +0200, Richard Brown wrote:
Chiming in late, sorry
We recently moved MicroOS and Kubic to use tmpfs for /tmp instead of writing files there to disk. [...] All of these reasons also apply for regular openSUSE, so I would like to propose that Tumbleweed moves to tmpfs for /tmp soon also.
I would vehemently oppose, as we have 3rd-party applications that write to (NOT configurable) /tmp and expect it to last there for a certain time (even after a reboot).
To workaround of that, I have created several symbolic links on /tmp to /data/tmp (or /opt/app/tmp or whatever) and I would be very unpleased to see all those symlinks disappear on a reboot. That would mean I have to write service files that fire up immediately after /tmp comes up and recreates those symlinks before the application wants to start.
#> cat /usr/share/systemd/tmp.mount # This file is part of systemd. # # systemd is free software; you can redistribute it and/or modify it # under the terms of the GNU Lesser General Public License as published by # the Free Software Foundation; either version 2.1 of the License, or # (at your option) any later version. [Unit] Description=Temporary Directory (/tmp) Documentation=man:hier(7) Documentation=https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems ConditionPathIsSymbolicLink=!/tmp DefaultDependencies=no Conflicts=umount.target Before=local-fs.target umount.target After=swap.target [Mount] What=tmpfs Where=/tmp Type=tmpfs Options=mode=1777,strictatime,nosuid,nodev Notice the "ConditionPathIsSymbolicLink=!/tmp", which, I guess, will prevent damage in your case.
I really like to keep my /tmp's as clean as possible, but sometimes it is not under our control :(
FWIW I never had to do anything like that on /usr/tmp
Does anyone have any objections, concerns, thoughts?
No objection to the general change but I would suggest two exceptions:
1. Systems where user created a specific mount point for /tmp (whether tmpfs or normal filesystem). According to the previous discussion, this should be taken care of already.
2. Systems with less memory than a certain threshold. I'm not sure what the threshold should be but I would be afraid to configure /tmp on tmpfs by default on systems with 4GB of RAM. 8GB might be OK, I have such configuration on my laptop with 8GB myself and didn't encounter any problems (but it took me quite some time to summon the courage).
:)
Michal Kubecek
-- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org