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[Launchpad Bug Tracker <1688606@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package cloud-initramfs-tools - 0.30ubuntu1.2

---------------
cloud-initramfs-tools (0.30ubuntu1.2) yakkety; urgency=medium

  * Add cloud-initramfs-rooturl package (LP: #1688606).

 -- Scott Moser <smoser@xxxxxxxxxx>  Thu, 11 May 2017 16:11:05 -0400

** Changed in: cloud-initramfs-tools (Ubuntu Yakkety)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1688606

Title:
  SRU cloud-initramfs-rooturl to archive

Status in maas-images:
  Triaged
Status in cloud-initramfs-tools package in Ubuntu:
  Invalid
Status in cloud-initramfs-tools source package in Trusty:
  Fix Released
Status in cloud-initramfs-tools source package in Xenial:
  Fix Released
Status in cloud-initramfs-tools source package in Yakkety:
  Fix Released

Bug description:
  === Begin SRU Template ===
  [Impact]
  MAAS has an interest in booting entirely ephemerally without iscsi root.
  The package cloud-initramfs-rooturl supports booting with root coming
  from a url.
    root=http://..../squashfs

  This function will be used to pxe boot into a RAM only system with no
  dependency on the network.

  [Test Case]
  See the attached prepare-1688606.sh.  That script automates
  everything here making this much easier to test.

  1. make sure squashfs module is in the initramfs
     squashfs module is not automatically added to initramfs in precise.
     Just ensure that it is there.

     $ [ "$(lsb_release -sc)" = "precise" ] &&
        echo "manual_add_modules squashfs" |
           sudo tee /etc/initramfs-tools/hooks/squashfs

  2. install cloud-initramfs-rooturl
     sudo apt-get update
     sudo apt-get install cloud-initramfs-rooturl

  3. collect the kernel and newly generated initramfs

     sudo cat /boot/vmlinu?-$(uname -r) > kernel
     cp /boot/initrd.img-$(uname -r) initrd

  4. Download a squashfs image or a .tar.xz image

     rel="xenial"
     burl="http://cloud-images.ubuntu.com/daily/server";
     file="$rel-server-cloudimg-amd64-root.tar.xz"
     file="$rel-server-cloudimg-amd64.squashfs"
     wget "$burl/$rel/current/$file" -O "$file"

  5. run a web server
     python -m SimpleHTTPServer 9999 &

  6. create a seed disk for cloud-init.

     $ cat > my-user-data <<EOF
     #cloud-config
     password: passw0rd
     chpasswd: { expire: False }
     ssh_pwauth: True

     $ echo "instance-id: $(uuidgen || echo i-abcdefg)" > my-meta-data
     $ cloud-localds seed.img my-user-data my-meta-data

  7. Boot a vm using the kernel, initrd and url.

     cmdline="root=http://10.0.2.2:9999/$file console=ttyS0 -v "
     cmdline="${cmdline} overlayroot=tmpfs"

     qemu-system-x86_64 -enable-kvm \
        -device virtio-net-pci,netdev=net00 \
        -netdev type=user,id=net00 \
        -drive if=virtio,file=seed.img \
        -m 1G -nographic \
        -kernel kernel -initrd initrd \
        -append "root=$cmdline"

  [Regression Potential]
  Low.  This is adding a package previously not present.

  [Other Info]
  Related bugs:
   * bug 1689557: replace iscsi usage in ephemeral image with rooturl
   * bug 1689642: cloud-initramfs-rooturl should manual_add_modules squashfs 

  === End SRU Template ===

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