On Mon, 26 Jul 2021 23:19:09 +0300, Nicholas Guriev wrote: >However in general, /tmp is not intended to have important data which >is worth regretting.
Let alone that tmp could be mounted as tmpfs, see https://en.wikipedia.org/wiki/Tmpfs . However, even if it's not a tmpfs, a systemd unit might clean /tmp, for Ubuntu see https://askubuntu.com/questions/20783/how-is-the-tmp-directory-cleaned-up . Disabling or masking related systemd units should work. An example from my Arch Linux install. It's not mounted by fstab, but by a systemd unit. [rocketmouse@archlinux ~]$ df -h | grep tmpfs tmpfs 3.9G 31M 3.9G 1% /dev/shm tmpfs 3.9G 1.9M 3.9G 1% /tmp tmpfs 786M 104K 785M 1% /run/user/1000 [rocketmouse@archlinux ~]$ cat /etc/fstab | grep tmp #tmpfs /tmp tmpfs nodev,nosuid,size=3G 0 0 [rocketmouse@archlinux ~]$ systemctl status tmp.mount ● tmp.mount - Temporary Directory /tmp Loaded: loaded (/proc/self/mountinfo; static) Active: active (mounted) since Sat 2021-07-03 21:09:58 CEST; 3 weeks 2 days ago Where: /tmp What: tmpfs Docs: https://systemd.io/TEMPORARY_DIRECTORIES man:file-hierarchy(7) https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems Tasks: 0 (limit: 9398) Memory: 32.0K CPU: 1ms CGroup: /system.slice/tmp.mount Jul 03 21:09:58 archlinux systemd[1]: Mounting Temporary Directory (/tmp)... Jul 03 21:09:58 archlinux systemd[1]: Mounted Temporary Directory (/tmp). [rocketmouse@archlinux ~]$ systemctl status systemd-tmpfiles-clean ○ systemd-tmpfiles-clean.service - Cleanup of Temporary Directories Loaded: loaded (/usr/lib/systemd/system/systemd-tmpfiles-clean.service; static) Active: inactive (dead) since Mon 2021-07-26 21:35:55 CEST; 1h 47min ago TriggeredBy: ● systemd-tmpfiles-clean.timer Docs: man:tmpfiles.d(5) man:systemd-tmpfiles(8) Process: 1018193 ExecStart=systemd-tmpfiles --clean (code=exited, status=0/SUCCESS) Main PID: 1018193 (code=exited, status=0/SUCCESS) CPU: 65ms Jul 26 21:35:55 archlinux systemd[1]: Starting Cleanup of Temporary Directories... Jul 26 21:35:55 archlinux systemd[1]: systemd-tmpfiles-clean.service: Deactivated successfully. Jul 26 21:35:55 archlinux systemd[1]: Finished Cleanup of Temporary Directories. [rocketmouse@archlinux ~]$ systemctl status systemd-tmpfiles-clean.timer ● systemd-tmpfiles-clean.timer - Daily Cleanup of Temporary Directories Loaded: loaded (/usr/lib/systemd/system/systemd-tmpfiles-clean.timer; static) Active: active (waiting) since Sat 2021-07-03 21:09:58 CEST; 3 weeks 2 days ago Trigger: Tue 2021-07-27 21:35:55 CEST; 22h left Triggers: ● systemd-tmpfiles-clean.service Docs: man:tmpfiles.d(5) man:systemd-tmpfiles(8) Jul 03 21:09:58 archlinux systemd[1]: Started Daily Cleanup of Temporary Directories. [rocketmouse@archlinux ~]$ man systemctl | grep " mask UNIT" -A4 mask UNIT... Mask one or more units, as specified on the command line. This will link these unit files to /dev/null, making it impossible to start them. This is a stronger version of disable, since it prohibits all kinds of activation of the unit, including enablement and manual activation. Use this option with care. This honors the --runtime option to only mask temporarily until the next reboot of the system. The --now option may be used to ensure that the units are also stopped. This command expects valid unit names only, it does not accept unit file paths -- Ubuntu-devel-discuss mailing list Ubuntu-devel-discuss@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-discuss
