yahoo-eng-team team mailing list archive

[Graham Leggett <1862417@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

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

** Affects: cloud-init
     Importance: Undecided
         Status: New

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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:
  New

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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