---
- name: "check if /usr is a read-only partition"
  command: 'grep -E " /usr.*ro" /proc/mounts'
  args:
    warn: no
  changed_when: False
  failed_when: False
  check_mode: no
  register: usr_partition

- name: "mount /usr in rw"
  command: 'mount -o remount,rw /usr'
  args:
    warn: no
  changed_when: False
  when: usr_partition.rc == 0
  notify: remount usr