bundles/smartd: use systemd-timers

bundles/smartd/metadata.py

@@ -89,21 +89,19 @@ def icinga(metadata):
 
 
 @metadata_reactor.provides(
-    'cron/jobs/smartd',
+    'systemd-timers/timers',
 )
 def monthly_long_test(metadata):
-    lines = set()
+    timers = {}
 
-    for number, disk in enumerate(sorted(metadata.get('smartd/disks', set()))):
-        lines.add('0 3 {} * *    root    /usr/sbin/smartctl --test=long {} >/dev/null'.format(
-            number+1, # enumerate() starts at 0
-            disk,
-        ))
+    for day, disk in enumerate(sorted(metadata.get('smartd/disks', set())), start=1):
+        timers[f'smartd{disk.replace("/", "-")}'] = {
+            'command': f'/usr/sbin/smartctl --test=long {disk}',
+            'when': f'*-*-{day} 03:00:00 UTC',
+        }
 
     return {
-        'cron': {
-            'jobs': {
-                'smartd': '\n'.join(sorted(lines)),
-            },
+        'systemd-timers': {
+            'timers': timers,
         },
     }