---

# Configure attached ephemeral devices for storage and swap

- assert:
    that:
      - "ephemeral_device is defined"

- name: Set partition names
  set_fact:
    swap_partition: "{{ ephemeral_device}}1"
    opt_partition: "{{ ephemeral_device}}2"

- name: Ensure ephemeral device is unmounted
  become: yes
  mount:
    name: "{{ ephemeral_device }}"
    state: unmounted

- name: Get existing partitions
  become: yes
  parted:
    device: "{{ ephemeral_device }}"
    unit: MiB
  register: ephemeral_partitions

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

- name: Create new disk label
  become: yes
  parted:
    label: msdos
    device: "{{ ephemeral_device }}"

- name: Create swap partition
  become: yes
  parted:
    device: "{{ ephemeral_device }}"
    number: 1
    state: present
    part_start: '0%'
    part_end: "{{ configure_swap_size }}MiB"

- name: Create opt partition
  become: yes
  parted:
    device: "{{ ephemeral_device }}"
    number: 2
    state: present
    part_start: "{{ configure_swap_size }}MiB"
    part_end: "100%"

- name: Make swap on partition
  become: yes
  command: "mkswap {{ swap_partition }}"

- name: Write swap to fstab
  become: yes
  mount:
    path: none
    src: "{{ swap_partition }}"
    fstype: swap
    opts: sw
    passno: 0
    dump: 0
    state: present

# XXX: does "parted" plugin ensure the partition is available
# before moving on?  No udev settles here ...

- name: Add all swap
  become: yes
  command: swapon -a

- name: Create /opt filesystem
  become: yes
  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 }}"

# Rackspace at least does not have enough room for two devstack
# installs on the primary partition.  We copy in the existing /opt to
# the new partition on the ephemeral device, and then overmount /opt
# to there for the test runs.
#
# NOTE(ianw): the existing "mount" touches fstab.  There is currently (Sep2017)
# work in [1] to split mount & fstab into separate parts, but for now we bundle
# it into an atomic shell command
# [1] https://github.com/ansible/ansible/pull/27174
- name: Copy old /opt
  become: yes
  shell: |
    mount {{ opt_partition }} /mnt
    find /opt/ -mindepth 1 -maxdepth 1 -exec mv {} /mnt/ \;
    umount /mnt

# This overmounts any existing /opt
- name: Add opt to fstab and mount
  become: yes
  mount:
    path: /opt
    src: "{{ opt_partition }}"
    fstype: ext4
    opts: noatime
    state: mounted