ansitest/increase-swap-partition.yml

---
# pseudocode:
# reboot to get new disk size
# get info on existing swap: swapon -s
# TURN OFF swap: swapoff -a
# blkid|grep swap && reuse UUID so no modify fstab

# NOTE this script relies on swap being on sdb1, and only 1 swap partition

- name: install parted pkg if missing
  package:
    name: parted
    state: present

- name: get swapinfo - partition size b4
  shell: "swapon -s > /tmp/swapinfo.txt"
  args:
    creates: /tmp/swapinfo.txt

# straight up copied from patch
- name: reboot server to get latest disk size
    reboot:
      reboot_timeout: 600
      test_command: uptime
      post_reboot_delay: 60

- name: turn swap off
  shell: "swapoff -a"

- name: reuse existing swap uuid
  shell: "blkid |grep swap |head -n 1 |awk '{print $2}' > /tmp/blkidswapinfo.txt"
  args:
    creates: /tmp/blkidswapinfo.txt
#expected result:
#"UUID="BLAH"

# TODO Fail if swap not on sdb  

- name: delete existing swap on sdb
  parted:
    device: /dev/sdb
    number: 1
    state: absent

- name: create new partition with existing blkid
  parted:
    device: /dev/sdb
    number: 1
    part_type: primary
    part_start: 0%
    part_end: 100%
    state: present

- name: change partid to 82/swap
  shell: "parted -s /dev/sdb1 print"
  shell: "parted -s /dev/sdb1 set swap on"
  shell: "parted -s /dev/sdb1 print"

- name: remake swap partition with old UUID / no fstab changes
  shell: mkswap -U $(awk -F\" '{print $2}' /tmp/blkidswapinfo.txt)
  shell: "blkid |grep swap"

- name: turn swap back on
  shell: "swapon -a; swapon -s; free"

#- name: cleanup

##################
# Author: dave.bechtel@asmr
# script to delete and expand existing swap partition on sdb1
# 2020.0820 alpha ver