- name: Set partition names
  ansible.builtin.set_fact:
    opt_partition: "{{ ephemeral_device }}1"

- name: Ensure ephemeral device is unmounted
  become: true
  ansible.posix.mount:
    name: "{{ ephemeral_device }}"
    state: "{{ item }}"
  with_items:
    - unmounted
    - absent

- name: Get existing partitions
  become: true
  community.general.parted:
    device: "{{ ephemeral_device }}"
    unit: MiB
  register: ephemeral_partitions

- name: Remove any existing partitions
  become: true
  community.general.parted:
    device: "{{ ephemeral_device }}"
    number: "{{ item.num }}"
    state: absent
  with_items:
    - "{{ ephemeral_partitions.partitions }}"

- name: Create new disk label
  become: true
  community.general.parted:
    label: msdos
    device: "{{ ephemeral_device }}"

- name: Create opt partition
  become: true
  community.general.parted:
    device: "{{ ephemeral_device }}"
    number: 1
    state: present
    part_start: "0%"
    part_end: "100%"

- name: Create /opt filesystem
  become: true
  community.general.filesystem:
    fstype: ext4
    # The default ratio is 16384 bytes per inode or so. Reduce that to 8192
    # bytes per inode so that we get roughly twice the number of inodes as
    # by default. This should still be well above the block size of 4096.
    # We do this because we have found in at least a couple locations that
    # more inodes is useful and is painful to fix after the fact.
    opts: -i 8192
    dev: "{{ opt_partition }}"

- name: Add opt to fstab and mount
  become: true
  ansible.posix.mount:
    path: /opt
    src: "{{ opt_partition }}"
    fstype: ext4
    opts: noatime
    state: mounted