How best to compare filesystem size against another number?

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1

Hi there!

I’m trying to get the size of a filesystem (/opt in this case) and ensure it is larger than another number (3Gb). Here’s what I have in my test playbook:

---
- name: Assert that /opt has more than 3GB available
  hosts: localhost
  gather_facts: yes
  tasks:

    - name: Set available bytes for /opt
      set_fact:
        opt_available_bytes: "{{ item.size_available | int }}"
      loop: "{{ ansible_mounts }}"
      when: item.mount == '/opt'

    - name: Assert /opt has more than 3GB free
      assert:
        that:
          - opt_available_bytes > (3 * 1024 * 1024 * 1024)
        fail_msg: "/opt has less than 3GB free ({{ opt_available_bytes }} bytes)"
        success_msg: "/opt has sufficient space ({{ opt_available_bytes }} bytes)"

But when I run it, I get:

'>' not supported between instances of 'AnsibleUnsafeText' and 'int'. '>' not supported between instances of 'AnsibleUnsafeText' and 'int'"}

I’m sure it’s something stupid that I’m doing but I thought the “{{ item.size_available | int }}” sets that fact to be an int but apparently not. What is the right way to do this?

Thanks!

2

Use type casting on consumption, 2.19 and later Ansible core will preserve types better, but for all other versions templating tends to convert to text.

   assert:
        that:
          - opt_available_bytes|int > (3 * 1024 * 1024 * 1024)
1 Like
3

I threw a debug statement in to verify what the opt_available_bytes variable type was being stored as and even though it’s being passed to | int, it’s being stored as AnsibleUnsafeText:

TASK [debug] **********************
ok: [localhost] => {
    "msg": "opt_available_bytes type: AnsibleUnsafeText"
}

Just wanted to provide that information if it’s of any use.

4

That was it!!! Thank you SO much! Yeah, this box is running v2.17.12.

Thank you again!

5

test case:

- hosts: localhost
  gather_facts: false
  tasks:
      - set_fact:
          benumber: '{{ 3 * 4}}'

      - debug: msg={{ benumber |type_debug }}

Under 2.18:

PLAY [localhost] *************************************************************************************************************************************************************

TASK [set_fact] **************************************************************************************************************************************************************
ok: [localhost]

TASK [debug] *****************************************************************************************************************************************************************
ok: [localhost] => {
    "msg": "str"
}

PLAY RECAP *******************************************************************************************************************************************************************
localhost                  : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

Under 2.19

PLAY [localhost] *************************************************************************************************************************************************************

TASK [set_fact] **************************************************************************************************************************************************************
ok: [localhost]

TASK [debug] *****************************************************************************************************************************************************************
ok: [localhost] => {
    "msg": "int"
}

PLAY RECAP *******************************************************************************************************************************************************************
localhost                  : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0