---
- name: disks
  tags:
    - disks
  block:
  - name: check for mounted disk
    # Not perfect.
    ansible.builtin.command: "grep '{{ item }}' /proc/mounts"
    failed_when: false
    changed_when: false
    register: check_mounted_disk
    check_mode: no
    loop: "{{ raw_disks }}"
  
  - name: debug
    ansible.builtin.debug:
      msg: "{{ check_mounted_disk }}"
  
  - name: abort if disk mounted
    ansible.builtin.fail:
      msg: "Aborting install due to {{ item }} being mounted"
    when: item.rc == 0
    loop: "{{ check_mounted_disk.results }}"
  
  - name: write partition layout file
    ansible.builtin.copy:
      dest: /tmp/partition.sfdisk
      # This is a consistent disk layout for all systems, EFI or Legacy
      # non-LVM RootFS
      # TODO: where should boot be set? EFI vs BIOSBP
      content: |
        label: gpt
        p1 : start=1MiB, size=1MiB, type=21686148-6449-6E6F-744E-656564454649, name=BIOS
        p2 : start=2MiB, size=62MiB, type=uefi, name=EFI
        p3 : start=64MiB, size=448MiB, type=raid, name=BOOT
        p4 : start=512MiB, size=30GiB, type=raid, name=ROOT
        p5 : start=+, size=+, type=lvm, name=LVM
    tags:
      - partition
    
  - name: partition disks
    ansible.builtin.shell: "sfdisk {{ item }} </tmp/partition.sfdisk"
    loop: "{{ raw_disks }}"
    tags:
      - partition

  - name: setup p1 # BIOS_BP
    ansible.builtin.meta: noop
  
  - name: mdadm p2
    ansible.builtin.command: "mdadm --create -e 1.0 /dev/md2 --level=raid1 -n 2 {{ part2_dev|join(' ') }}"
    tags:
      - mdadm

  - name: mdadm p3
    ansible.builtin.command: "mdadm --create -e 1.0 /dev/md3 --level=raid1 -n 2 {{ part3_dev|join(' ') }}"
    tags:
      - mdadm

  - name: mdadm p4
    ansible.builtin.command: "mdadm --create -e 1.0 /dev/md4 --level=raid1 -n 2 {{ part4_dev|join(' ') }}"
    tags:
      - mdadm
  
  - name: format p2/mkfs
    ansible.builtin.command: "mkfs.fat -F 16 -n EFI {{ item }}"
    tags:
      - mkfs
    loop:
      - /dev/md2
  
  - name: format p3/mkfs
    ansible.builtin.command: "mkfs.ext4 -T floppy,news -L BOOT {{ item }}"
    loop:
      - /dev/md3
    tags:
      - mkfs

  - name: format p4/mkfs
    ansible.builtin.command: "mkfs.ext4 -T floppy,news -L ROOT {{ item }}"
    loop:
      - /dev/md4
    tags:
      - mkfs
  
  - name: format p5/pvcreate
    ansible.builtin.command: "pvcreate {{ part5_dev|join(' ') }}"
    tags:
      - lvm
      - pvcreate
  
  - name: fact vgcreate PVs
    ansible.builtin.set_fact:
      pvs: "{{ part5_dev|join(' ') }}"
    tags:
      - lvm
      - vgcreate
   #when: "{{ pvs }}" = ""
  
  - name: fact vgs
    ansible.builtin.set_fact:
      vgs: "{{ hostname }}"
    tags:
      - disk
      - mount
      - lvm
  
  - name: vgcreate
    ansible.builtin.command: "vgcreate {{ hostname }} {{ pvs }}"
    tags:
      - lvm
      - vgcreate

  # Dracut has a subtle bug: given rd.lvm=1 rd.lvm.vg=VGNAME as boot paramters,
  # and an *empty* VG (no LVs), the boot will hang. Make a LV as workaround.
  - name: lvcreate stub
    ansible.builtin.command: "lvcreate -L 4m -n test {{ hostname }}"
    tags:
      - lvm
      - lvcreate