---
- 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
  when: usr_partition.rc == 0
  notify: remount usr