Jinja2 spacing could be improved: {{ osd_fsid_list | default([]) + [{'osd_fsid': item.tags['ceph.osd_fsid'], 'destroy': (item.lv_name.startswith('osd-data-') and item.vg_name.startswith('ceph-')) | ternary(true, false), 'device': item.devices[0], 'journal': item['tags']['ceph.journal_device'] }] }} -> {{ osd_fsid_list | default([]) + [{'osd_fsid': item.tags['ceph.osd_fsid'], 'destroy': (item.lv_name.startswith('osd-data-') and item.vg_name.startswith('ceph-')) | ternary(true, false), 'device': item.devices[0], 'journal': item['tags']['ceph.journal_device']}] }}