Hi, I’m not sure, but can’t systemd-tmpfiles get this sorted for you ?
See https://www.freedesktop.org/software/systemd/man/systemd-tmpfiles-setup.service.html Good luck :-) -- François > Le 22 janv. 2020 à 18:59, Marcel Partap <mpar...@gmx.net> a écrit : > > Salut, > for our live debian USB stick distro for students ( > https://github.com/fsfw-dresden/usb-live-linux ), we want to minimize on > flash writes by putting several paths into a tmpfs overlay. So there is a > pre-overlay@.service with > >> [Unit] >> Description=Prepare writable overlay on %f >> DefaultDependencies=no >> RequiresMountsFor=/run >> >> [Service] >> Type=oneshot >> ExecStart=/bin/mkdir -p '/run%f' >> ExecStart=/bin/mount -t tmpfs -o noatime tmpfs '/run%f' >> ExecStart=/bin/mkdir -p '/run%f/work' '/run%f/rw' > > and f.e. a var-lib-apt-lists.mount with >> [Unit] >> Description=tmpfs overlay of %f >> Conflicts=umount.target >> Wants=pre-overlay@%p.service >> After=pre-overlay@%p.service >> >> [Mount] >> What=overlay >> Type=overlay >> Where=%f >> Options=lowerdir=%f,upperdir=/run%f/rw,workdir=/run%f/work >> >> [Install] >> WantedBy=local-fs.target > > Currently, the file is just cloned for multiple paths, which is working but > not very elegant. I tried changing it into an instanced unit file > tmpfs-overlay@.mount, which did not work ("Unit type mount cannot be > templated" in journal only, nothing from systemd-analyze verify or the > systemd.mount man page).. Neither did calling the file > tmpfs-overlay.mount.unit and symlinking to it as var-lib-apt-lists.mount, > var-cache-apt.mount etc. > > So what would be a more elegant way to not have multiple copies of the very > same file? > > Best Regards, > #marcel > _______________________________________________ > systemd-devel mailing list > systemd-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/systemd-devel _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
