Debian 11 - Systemd Timer Not Triggering Service as Expected on Remote Filesystems
I'm working through a tutorial and I've encountered a strange issue with I've been struggling with this for a few days now and could really use some help..... I'm having trouble with a systemd timer that should trigger a service to run a backup script every hour. The service works fine when executed manually, but it fails to trigger when run by the timer. The timer is configured to trigger every hour, but I noticed that the unit file refers to a path on a remote filesystem mounted via NFS. Here are the relevant configurations: **Timer Unit:** ```ini [Unit] Description=Run backup script every hour [Timer] OnCalendar=hourly Persistent=true [Install] WantedBy=timers.target ``` **Service Unit:** ```ini [Unit] Description=Backup Service [Service] Type=simple ExecStart=/usr/local/bin/backup_script.sh [Install] WantedBy=multi-user.target ``` The backup script checks for a specific directory on the remote filesystem. When I check the logs using `journalctl -u my_backup.service`, I see the following behavior message: ``` Failed to start backup service: No such file or directory ``` I made sure that the NFS share is mounted correctly and accessible at the time of the timer execution. The relevant NFS entry in `/etc/fstab` is: ``` 192.168.1.100:/mnt/backup /mnt/backup nfs defaults,_netdev 0 0 ``` The NFS share is definitely mounted at the time the timer is supposed to run, but I'm wondering if the timer itself may not wait long enough for the mount to be fully ready before executing the service. I tried adding `After=mnt-backup.mount` in the service unit under `[Unit]`, but it still did not resolve the scenario. I also verified that the permissions for the directory are correct. Has anyone encountered a similar scenario with systemd timers and NFS? What could be causing this behavior, and how can I ensure that the service runs without errors when triggered by the timer? Any tips or insights would be greatly appreciated. Any ideas what could be causing this? This is part of a larger service I'm building. I'm open to any suggestions. This is happening in both development and production on Ubuntu 22.04. Any feedback is welcome!