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[Ryan Harper <1862417@xxxxxxxxxxxxxxxxxx>]

<minfrin> The machine I'm working on uses cloud-init to update itself, it might only have the fix after the updates.
<rharper> ah, interesting
<rharper> cat /etc/cloud/build.info  
<rharper> that'll give us a point in time for which version you have 
<rharper> and I suspect you're right, the top of your cloud-init.log will the original version 
<minfrin> build_name: serverserial: 20190514
<minfrin> Definitely way older than the PR.
<rharper> yep
<minfrin> I suspect the fix in our case is to use the latest image of Ubuntu from end Jan 2020.
<rharper> yep

** Changed in: cloud-init
       Status: Incomplete => Invalid

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https://bugs.launchpad.net/bugs/1862417

Title:
  cloud-init: Attempt to mkswap on a partition fails: invalid block
  count argument: ''

Status in cloud-init:
  Invalid

Bug description:
  If an attempt is made to configure a swap partition on an Ubuntu
  Bionic machine as follows (not a swap file, a swap partition), the
  attempt to mkswap fails.

  The expected behaviour is that mkswap and swapon are executed
  correctly, and /dev/xvdg becomes a valid swap disk. In addition, when
  filename points at a partition, size and maxsize should be ignored.

  fs_setup:
    - label: vidi
      device: /dev/xvde
      filesystem: ext4
    - label: swap
      device: /dev/xvdg
      filesystem: swap
  mounts:
  - [ /dev/xvde, /var/lib/vidispine, ext4, defaults, 0, 0 ]
  - [ /dev/xvdg, none, swap, sw, 0, 0 ]
  swap:
      filename: /dev/xvdg
      size: auto
      maxsize: 17179869184
  mount_default_fields: [ None, None, "auto", "defaults", "0", "2" ]

  When the machine starts up for the first time, the following error is
  logged after the swap size parameter is passed as the empty string:

  2020-02-07 20:21:55,242 - cc_disk_setup.py[WARNING]: Force flag for swap is unknown.
  2020-02-07 20:21:55,255 - util.py[WARNING]: Failed during filesystem operation
  Failed to exec of '['/sbin/mkswap', '/dev/xvdg', '-L', 'swap', '']':
  Unexpected error while running command.
  Command: ['/sbin/mkswap', '/dev/xvdg', '-L', 'swap', '']
  Exit code: 1
  Reason: -
  Stdout: 
  Stderr: mkswap: invalid block count argument: ''
  2020-02-07 20:21:55,530 - cc_mounts.py[WARNING]: Activate mounts: FAIL:swapon -a
  2020-02-07 20:21:55,530 - util.py[WARNING]: Activate mounts: FAIL:swapon -a

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