Traceback (most recent call last):
  File "/usr/share/zeitgeist/_zeitgeist/engine/extensions/storagemonitor.py", line 172, in _on_volume_removed
    self.remove_storage_medium (self._get_volume_id(volume))
  File "/usr/share/zeitgeist/_zeitgeist/engine/extensions/storagemonitor.py", line 229, in remove_storage_medium
    self._db.execute("INSERT INTO storage (value, state) VALUES (?, ?)", (medium_name, StorageState.NotAvailable))
  File "/usr/share/zeitgeist/_zeitgeist/engine/sql.py", line 76, in execute
    return super(UnicodeCursor, self).execute(statement, parameters)
ProgrammingError: Cannot operate on a closed database.