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[Scott Moser <smoser@xxxxxxxxxx>]

** No longer affects: cloud-initramfs-tools (Ubuntu Precise)

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

Title:
  SRU cloud-initramfs-rooturl to archive

Status in cloud-initramfs-tools package in Ubuntu:
  Confirmed
Status in cloud-initramfs-tools source package in Trusty:
  Confirmed
Status in cloud-initramfs-tools source package in Xenial:
  Confirmed
Status in cloud-initramfs-tools source package in Yakkety:
  Confirmed

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]
  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.

     $ 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]

  === End SRU Template ===

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