<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body style='font-size: 10pt; font-family: Verdana,Geneva,sans-serif'> Hello, I have a backup job (using rsnapshot) that must be executed daily, weekly and monthly. Therefore I created these systemd-timers: <div class="codebox" style="color: #222222; font-size: 13px; font-family: sans-serif;"> <pre class="vscroll" style="font-size: 1em; font-family: monospace !important; font-weight: normal;"><code style="font-size: 1em; font-family: monospace !important;"># /etc/systemd/system/rsnapshot-daily.timer [Unit] Description=rsnapshot daily backup [Timer] OnCalendar=daily RandomizedDelaySec=10m Persistent=true Unit=rsnapshot@daily.service [Install] WantedBy=timers.target # /etc/systemd/system/rsnapshot-weekly.timer [Unit] Description=rsnapshot weekly backup [Timer] OnCalendar=weekly RandomizedDelaySec=10m Persistent=true Unit=rsnapshot@weekly.service [Install] WantedBy=timers.target # /etc/systemd/system/rsnapshot-monthly.timer [Unit] Description=rsnapshot monthly backup [Timer] OnCalendar=monthly RandomizedDelaySec=10m Persistent=true Unit=rsnapshot@monthly.service [Install] WantedBy=timers.target</code></pre> </div> On 07/01/2024 all 3 jobs have been triggered in parallel. However, rsnapshot can run only once, and therefore 2 jobs have failed (rsnapshot creates a lockfile /var/run/rsnapshot.pid). This means, one must ensure that these scheduled jobs run sequentially in this order: monthly - weekly - daily Can you please advise how to modify the relevant systemd-timer config file to ensure the sequential job execution? THX </body></html>