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[Balint Reczey <balint.reczey@xxxxxxxxxxxxx>]

** Changed in: livecd-rootfs (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1721261

Title:
  [SRU] Release minimized image related changes to Xenial

Status in livecd-rootfs package in Ubuntu:
  Fix Released
Status in livecd-rootfs source package in Xenial:
  Fix Released

Bug description:
  [Impact]

   * Ability to generate minimized images is a new feature of
     livecd-rootfs. Minimized images have smaller footprint on disk, may
     not use initramfs to boot and may have smaller RAM footprint as well.
   * Using minimal images can save bandwidth and system resources and we
     would like to make those improvements available for Xenial users.

  [Test Case]

   * A new autopkgtest (minimized) was added to test building minimized
     images. The test logs show the generated image sizes for ubuntu-cpc
     images with and without minimization and the minimized images have
     to be smaller.

  [Regression Potential]

   * The changes should not affect images which are not minimized but the
     minimized images may not boot on some systems. For example the Linux
     kernel does not boot in a Vagrant VM without initramfs, but the
     minimized Vagrant image does not include initramfs.

   * In case the effect of changes are not limited to the minimized image
     they may make packages missing from regular images and/or may make the
     regular images unbootable.

  [Other Info]

   * The current patch works around the 'minimized' autopkgtest  failure on
     ppc64el which affects Artful and can be observed when the Linux kernel
     package does not depend on initramfs-tools (LP: #1700972) thus the
     minimized images don't include initramfs support.

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