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[Launchpad Bug Tracker <1687712@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package cloud-init -
0.7.9-144-g2825a917-0ubuntu1

---------------
cloud-init (0.7.9-144-g2825a917-0ubuntu1) artful; urgency=medium

  * New upstream snapshot.
    - flake8: move the pinned version of flake8 up to 3.3.0
    - tests: Apply workaround for snapd bug in test case. [Joshua Powers]
    - RHEL/CentOS: Fix dual stack IPv4/IPv6 configuration. [Andreas Karis]
      (LP: #1679817, #1685534, #1685532)
    - disk_setup: fix several issues with gpt disk partitions. (LP: #1692087)
    - function spelling & docstring update [Joshua Powers]
    - Fixing wrong file name regression. [Joshua Powers]
    - tox: move pylint target to 1.7.1
    - Fix get_interfaces_by_mac for empty macs (LP: #1692028)
    - DigitalOcean: remove routes except for the public interface.
      [Ben Howard] (LP: #1681531.)
    - netplan: pass macaddress, when specified, for vlans
      [Dimitri John Ledkov] (LP: #1690388)
    - doc: various improvements for the docs on cc_users_groups.
      [Felix Dreissig]
    - cc_ntp: write template before installing and add service restart
      [Ryan Harper] (LP: #1645644)
    - cloudstack: fix tests to avoid accessing /var/lib/NetworkManager
      [Lars Kellogg-Stedman]
    - tests: fix hardcoded path to mkfs.ext4 [Joshua Powers] (LP: #1691517)
    - Actually skip warnings when .skip file is present. [Chris Brinker]
      (LP: #1691551)
    - netplan: fix netplan render_network_state signature.
      [Dimitri John Ledkov] (LP: #1685944)
    - Azure: fix reformatting of ephemeral disks on resize to large types.
      (LP: #1686514)
    - Revert "tools/net-convert: fix argument order for render_network_state"
    - make deb: Add devscripts dependency for make deb. Cleanup packages/bddeb.
      [Chad Smith] (LP: #1685935)
    - tools/net-convert: fix argument order for render_network_state
      [Ryan Harper] (LP: #1685944)
    - openstack: fix log message copy/paste typo in _get_url_settings
      [Lars Kellogg-Stedman]
    - unittests: fix unittests run on centos [Joshua Powers]
    - Improve detection of snappy to include os-release and kernel cmdline.
      (LP: #1689944)
    - Add address to config entry generated by _klibc_to_config_entry.
      [Julien Castets] (LP: #1691135)
    - sysconfig: Raise ValueError when multiple default gateways are present.
      [Chad Smith] (LP: #1687485)
    - FreeBSD: improvements and fixes for use on Azure
      [Hongjiang Zhang] (LP: #1636345)
    - Add unit tests for ds-identify, fix Ec2 bug found.
    - fs_setup: if cmd is specified, use shell interpretation.
      [Paul Meyer] (LP: #1687712)
    - doc: document network configuration defaults policy and formats.
      [Ryan Harper]
    - Fix name of "uri" key in docs for "cc_apt_configure" module
      [Felix Dreissig]
    - tests: Enable artful [Joshua Powers]

 -- Scott Moser <smoser@xxxxxxxxxx>  Tue, 23 May 2017 17:04:40 -0400

** Changed in: cloud-init (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1687712

Title:
  cc_disk_setup: fs_setup with cmd doesn't work

Status in cloud-init:
  Confirmed
Status in cloud-init package in Ubuntu:
  Fix Released

Bug description:
  This reproduces on Azure, but it should fail similarly elsewhere.
  Consider repro.yml:

  #cloud-config
  fs_setup:
      - special:
        cmd: mkfs -t %(filesystem)s -L %(label)s %(device)s
        filesystem: ext4
        device: /dev/sdb1
        label: repro

  Create a VM with this cloud config: 
  $ az vm create -g $rg -l westus2 --custom-data @repro.yml --image UbuntuLTS -n repro2

  Then cloud-init will fail with:
  Failed to exec of 'mkfs -t ext4 -L repro /dev/sdb1':
  Unexpected error while running command.
  Command: mkfs -t ext4 -L repro /dev/sdb1
  Exit code: -
  Reason: [Errno 2] No such file or directory: 'mkfs -t ext4 -L repro /dev/sdb1'

  $ dpkg-query -W -f='${Version}' cloud-init
  0.7.9-48-g1c795b9-0ubuntu1~16.04.1

  Bug is in mkfs() in cc_disk_setup.py, which creates a shell-like
  string in the case that cmd was specified and a exec-like array in the
  other case (around line 913).

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