Add fstrim timer to ansible play

ansible/etc/systemd/system/fstrim.service

@@ -0,0 +1,6 @@
+[Unit]
+Description=Discard unused blocks
+
+[Service]
+Type=oneshot
+ExecStart=/sbin/fstrim -av

ansible/etc/systemd/system/fstrim.timer

@@ -0,0 +1,11 @@
+[Unit]
+Description=Discard unused blocks once a week
+Documentation=man:fstrim
+
+[Timer]
+OnCalendar=weekly
+AccuracySec=1h
+Persistent=true
+
+[Install]
+WantedBy=timers.target

ansible/main.yml

@@ -38,6 +38,28 @@
 
       when: apt_update is changed
 
+    # -------------------------------------------------------------------------
+    # Loki uses SSDs so use fstrim on a timer.
+    # -------------------------------------------------------------------------
+
+    - name: Copy fstrim service file
+      copy:
+        src: ./etc/systemd/system/fstrim.service
+        dest: /etc/systemd/system/fstrim.service
+        mode: 0644
+
+    - name: Copy fstrim timer file
+      copy:
+        src: ./etc/systemd/system/fstrim.timer
+        dest: /etc/systemd/system/fstrim.timer
+        mode: 0644
+
+    - name: Enable and start fstrim.timer
+      service:
+        name: fstrim.timer
+        state: started
+        enabled: yes
+
     # -------------------------------------------------------------------------
     # Apparmor.
     # -------------------------------------------------------------------------