Comment 20 for bug 1519470

Also tried RAID0 with wily and that too failed.
Machine-readable output follows:
apt_mirrors:
  ubuntu_archive: http://us.archive.ubuntu.com//ubuntu/
  ubuntu_security: http://us.archive.ubuntu.com//ubuntu/
apt_proxy: http://10.0.0.1:8000/
debconf_selections:
  maas: 'cloud-init cloud-init/datasources multiselect MAAS

    cloud-init cloud-init/maas-metadata-url string http://10.0.0.1/MAAS/metadata/

    cloud-init cloud-init/maas-metadata-credentials string oauth_token_key=BXbzu9PEvBBb4mDdLU&oauth_token_secret=8SquwnRT8ptAaJcefvCTpYaRVYW7JZaP&oauth_consumer_key=fRkhnNk3kzQgUQvJ7s

    cloud-init cloud-init/local-cloud-config string apt_preserve_sources_list:
    true\napt_proxy: http://10.0.0.1:8000/\nmanage_etc_hosts: false\nmanual_cache_clean:
    true\nreporting:\n maas: {consumer_key: fRkhnNk3kzQgUQvJ7s, endpoint: ''http://10.0.0.1/MAAS/metadata/status/node-28402790-92c5-11e5-a8a3-eca86bfb9f66'',\n token_key:
    BXbzu9PEvBBb4mDdLU, token_secret: 8SquwnRT8ptAaJcefvCTpYaRVYW7JZaP,\n type:
    webhook}\nsystem_info:\n package_mirrors:\n - arches: [i386, amd64]\n failsafe:
    {primary: ''http://archive.ubuntu.com/ubuntu'', security: ''http://security.ubuntu.com/ubuntu''}\n search:\n primary:
    [''http://us.archive.ubuntu.com/ubuntu/'']\n security: [''http://us.archive.ubuntu.com/ubuntu/'']\n -
    arches: [default]\n failsafe: {primary: ''http://ports.ubuntu.com/ubuntu-ports'',
    security: ''http://ports.ubuntu.com/ubuntu-ports''}\n search:\n primary:
    [''http://ports.ubuntu.com/ubuntu-ports'']\n security: [''http://ports.ubuntu.com/ubuntu-ports'']\n

    '
install:
  log_file: /tmp/install.log
  post_files:
  - /tmp/install.log
kernel:
  mapping: {}
  package: linux-generic
late_commands:
  maas:
  - wget
  - --no-proxy
  - http://10.0.0.1/MAAS/metadata/latest/by-id/node-28402790-92c5-11e5-a8a3-eca86bfb9f66/
  - --post-data
  - op=netboot_off
  - -O
  - /dev/null
network:
  config:
  - id: eth0
    mac_address: 00:30:48:65:5e:0c
    mtu: 1500
    name: eth0
    subnets:
    - address: 10.0.0.128/24
      dns_nameservers: []
      gateway: 10.0.0.1
      type: static
    type: physical
  - id: eth1
    mac_address: 00:30:48:65:5e:0d
    mtu: 1500
    name: eth1
    subnets:
    - type: manual
    type: physical
  - address: 10.0.0.1
    search:
    - maas
    type: nameserver
  version: 1
network_commands:
  builtin:
  - curtin
  - net-meta
  - custom
partitioning_commands:
  builtin:
  - curtin
  - block-meta
  - custom
power_state:
  mode: reboot
reporting:
  maas:
    consumer_key: fRkhnNk3kzQgUQvJ7s
    endpoint: http://10.0.0.1/MAAS/metadata/status/node-28402790-92c5-11e5-a8a3-eca86bfb9f66
    token_key: BXbzu9PEvBBb4mDdLU
    token_secret: 8SquwnRT8ptAaJcefvCTpYaRVYW7JZaP
    type: webhook
storage:
  config:
  - grub_device: true
    id: sda
    model: WDC WD2004FBYZ-0
    name: sda
    ptable: msdos
    serial: WD-WMC6N0D4Y76V
    type: disk
    wipe: superblock
  - id: sdb
    model: WDC WD2004FBYZ-0
    name: sdb
    ptable: gpt
    serial: WD-WMC6N0D8AS39
    type: disk
    wipe: superblock
  - device: sda
    id: sda-part1
    name: sda-part1
    number: 1
    offset: 4194304B
    size: 2000393601024B
    type: partition
    uuid: 679c683c-e2c0-4aa2-96aa-068de1f6672c
    wipe: superblock
  - device: sdb
    id: sdb-part1
    name: sdb-part1
    number: 1
    offset: 4194304B
    size: 2000393601024B
    type: partition
    uuid: 5d870b49-dd7b-48b8-b0b1-2e5c129ac3ff
    wipe: superblock
  - devices:
    - sda-part1
    - sdb-part1
    id: md0
    name: md0
    raidlevel: 0
    spare_devices: []
    type: raid
  - fstype: ext4
    id: md0_format
    label: ''
    type: format
    uuid: a45bd902-b008-4416-ade1-2cb61fee6d17
    volume: md0
  - device: md0_format
    id: md0_mount
    path: /
    type: mount
  version: 1