Conditionally perform task only when a specific filesystem is or is not mounted

[Neech WORTHINGTON]

I would like to conditionally execute a task only when a specific filesystem is not mounted on the mount point "/u1/data". So, something like the following in Pseudo-ish-code:

- name: "Do something only when /u1/data is not mounted"

  module_action: do my module action here

  when: "not mounted /u1/data"

I notice that there is an ansible_mounts structure that is pulled back as part of (I assume) the mount module facts gathering, but I'm not sure how to write a rule for it:

        "ansible_mounts": [

            {

                "device": "/dev/mapper/vg0-root", 

                "fstype": "ext4", 

                "mount": "/", 

                "options": "rw,errors=remount-ro", 

                "size_available": 15506026496, 

                "size_total": 17580843008

            }, 

            {

                "device": "/dev/sda1", 

                "fstype": "ext4", 

                "mount": "/boot", 

                "options": "rw", 

                "size_available": 228306944, 

                "size_total": 280992768

            }, 

            {

                "device": "/dev/mapper/vg0-u1data", 

                "fstype": "ext4", 

                "mount": "/u1/data", 

                "options": "rw,noatime", 

                "size_available": 54260461568, 

                "size_total": 57174415769

            }

        ],

I've had the following syntax suggested, but it doesn't work:

  when: "not 'mount[/u1/data]' in ansible_mounts"

I'm not very familiar with Jinja templating, so any assistance here would be greatly appreciated!

Thanks in advance