[Bug 1625023] Re: switch to systemd on ubuntu phone xenial

[Yuan-Chen Cheng]

** Changed in: canonical-devices-system-image
       Status: Confirmed => In Progress

** Changed in: lxc-android-config (Ubuntu)
       Status: Confirmed => Fix Committed

** Also affects: upstart
   Importance: Undecided
       Status: New

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Title:
  switch to systemd on ubuntu phone xenial

Status in Canonical System Image:
  In Progress
Status in upstart :
  New
Status in android-tools package in Ubuntu:
  Confirmed
Status in lxc-android-config package in Ubuntu:
  Fix Committed
Status in ubuntu-touch-meta package in Ubuntu:
  Confirmed

Bug description:
  Snappy heavily rely on systemd system session and xenial has systemd
  by default.

  [steps to construct systemd-based avila]

  1. flash images built from xenial branch [1]. This should gives a
  working xenial+upstart avila. Following steps are based on rootfs rev
  51.

  2. Install systemd-sysv rather than upstart-sysv (Bug 1625023)
  2.1. rebuild latest ubuntu-touch package from source [2] with patch [3] applied.
  2.2. download latest systemd-sysv package [4].
  2.3. dpkg -i ubuntu-touch_*.deb systemd-sysv_*.deb

  3. Install android-tools-adbd for systemd (Bug 1627613)
  3.1. Install prebuilt package [5] or recompile it from source [6] with patch [7] applied.
  3.2. Install the package from Terminal app because it will break adb connection and interrupt the installation process leaving a very bad state of the package.

  4. Recompile upstart with merge proposal [8] include and install at
  least the built binary /sbin/upstart-local-bridge.

  5. Reboot.

  [1]: https://code.launchpad.net/~avila-private-team/avila-private/+git/platform_manifest/+ref/xenial
  [2]: http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu/pool/main/u/ubuntu-touch-meta/
  [3]: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1625023/+attachment/4744047/+files/0001-depends-on-systemd-sysv-instead.patch
  [4]: http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu/pool/main/s/systemd/
  [5]: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1627613/+attachment/4751442/+files/android-tools-adbd_5.1.1r36+git20160322-0ubuntu3.1~overlay1_arm64.deb
  [6]: http://ppa.launchpad.net/ci-train-ppa-service/stable-phone-overlay/ubuntu/pool/main/a/android-tools/
  [7]: https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/1627613/+attachment/4750792/+files/0001-install-systemd-service-files.patch
  [8]: https://code.launchpad.net/~vicamo/upstart/xenial-escape-systemd-strings/+merge/307140

  [All Pending MPs]

  1. ubuntu-touch-meta:
  * https://bugs.launchpad.net/canonical-devices-system-image/+bug/1625023/+attachment/4744047/+files/0001-depends-on-systemd-sysv-instead.patch
  2. android-tools:
  https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/1627613/+attachment/4750792/+files/0001-install-systemd-service-files.patch
  3. upstart:
  * https://code.launchpad.net/~vicamo/upstart/xenial-escape-systemd-strings/+merge/307140

  [Prebuilt rootfs tarball]

  https://private-fileshare.canonical.com/~vicamo/avila/images/systemd/ubuntu/20161005/rootfs-systemd_rev-51.tar.bz2
  md5sum: 3cf478a654509c67a3d8c097bd0de9ec
  build_number: 51
  version_detail: ubuntu=20161005,device=20160919.0,custom=20161005,version=51

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