Ansible task to change the reserved filesystem blocks

ansible_task.yml

  tasks:
  - name: Change reserved blocks to 1 percent on ext4 filesystems that are not / mounted
    shell: tune2fs -l {{ item.device }} | egrep "Reserved block count|Block count" | paste -sd\ | awk '{print ($7 / $3 * 100)}' | grep -q 1 || tune2fs -m1 {{ item.device }}
    with_items:
    - "{{ ansible_mounts }}"
    when: item.fstype == 'ext4' and item.mount != '/'
    register: tune2fs
    changed_when: tune2fs.stdout != ""