Understand the alert
This alert is triggered when a systemd automount unit enters the failed state. It means that a mounted filesystem has failed or experienced an error and thus is not available for use.
What is an automount unit?
An automount unit is a type of systemd unit that handles automounting filesystems. It defines when, where, and how a filesystem should be automatically mounted on the system. Automount units use the .automount file extension and are typically located in the /etc/systemd/system directory.
Troubleshoot the alert
- Identify the failed automount unit(s)
To list all systemd automount units and their states, run the following command:
systemctl list-units --all --type=automount
Look for the unit(s) with a failed state.
- Check the automount unit file
Examine the failed unit's configuration file in /etc/systemd/system/ or /lib/systemd/system/ (depending on your system). If there is an error in the configuration, fix it and reload the systemd configuration.
sudo systemctl daemon-reload
- Check the journal for errors
Use the journalctl command to check for any system logs related to the failed automount unit:
sudo journalctl -u [UnitName].automount
Replace [UnitName] with the name of the failed automount unit. Analyze the logs to identify the root cause of the failure.
- Attempt to restart the automount unit
After identifying and addressing the cause of the failure, try to restart the automount unit:
sudo systemctl restart [UnitName].automount
Check the unit's status:
systemctl status [UnitName].automount
If it's in the active state, the issue has been resolved.