[Bug 1837088] Re: Generate HyperV Image Gallery Builds in Bionic and Disco

Ɓukasz Zemczak 1837088 at bugs.launchpad.net
Tue Nov 5 19:29:56 UTC 2019


Reviewed, merged and sponsored. It's in the Unapproved queues now.

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https://bugs.launchpad.net/bugs/1837088

Title:
  Generate HyperV Image Gallery Builds in Bionic and Disco

Status in livecd-rootfs package in Ubuntu:
  Fix Released
Status in livecd-rootfs source package in Bionic:
  New
Status in livecd-rootfs source package in Disco:
  New

Bug description:
  [Overview]

  We can generate HyperV Image Gallery builds for Eoan images with
  livecd-rootfs, but not for Bionic and Disco. These images are
  necessary for users to install Ubuntu on their Windows machines from
  the HyperV Image Gallery:

  https://ubuntu.com/blog/optimised-ubuntu-desktop-images-available-in-
  microsoft-hyper-v-gallery

  To support this, three commits need to be backported from
  ubuntu/master to ubuntu/disco and ubuntu/bionic:

  https://git.launchpad.net/livecd-rootfs/commit/?id=0e3b1e206b8ac24e22b49b40a0de1e16e3d412dd
  https://git.launchpad.net/livecd-rootfs/commit/?id=124d07410161427222c002bec023b7d2ca03a465
  https://git.launchpad.net/livecd-rootfs/commit/?id=5a2b49950af9bf407b333363ea6a5488500fbcc4

  [Test Case]

  These images can be built with the livecd-roottfs ubuntu/master branch
  by specifying the ubuntu project and the desktop-preinstalled
  subproject.

  For example (using the ubuntu-bartender helper script in ubuntu-old-
  fashioned [1]):

  ubuntu-old-fashioned/scripts/ubuntu-bartender/ubuntu-bartender --
  --series eoan --project ubuntu --subproject desktop-preinstalled

  When backported, it's expected that these images can be built for both
  disco and bionic with the same parameters specified:

  ubuntu-old-fashioned/scripts/ubuntu-bartender/ubuntu-disco-bartender
  -- --project ubuntu --subproject desktop-preinstalled

  ubuntu-old-fashioned/scripts/ubuntu-bartender/ubuntu-bionic-bartender
  -- --project ubuntu --subproject desktop-preinstalled

  1: https://github.com/chrisglass/ubuntu-old-fashioned

  [Regression Potential]

  The binary hook used to create the HyperV image is isolated and
  shouldn't affect other image builds; however, that hook depends on a
  symbolic link to a hook in the ubuntu-cpc project. There's a
  possibility of future breakage if the ubuntu-cpc project hook is
  modified without taking into account its use in multiple places.

  To enable the use of a symbolic link, some logic was changed in the
  live-build configuration script. Previously, all files were copied
  over as-is. Now, symbolic links in hook directories are dereferenced
  and turned into regular files. In practice, this should only have an
  affect on two files, and that affect should be safe:

  livecd-rootfs $ find . -type l -print | grep hooks
  ./live-build/ubuntu/hooks/033-disk-image-uefi.binary
  ./live-build/ubuntu-cpc/hooks.d/base/series/all

  This may cause undesired behavior for other users of livecd-rootfs,
  though, that inject symbolic links into their hooks directory.

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