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[Launchpad Bug Tracker <1920955@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package ubuntu-image - 1.11+20.10ubuntu1

---------------
ubuntu-image (1.11+20.10ubuntu1) groovy; urgency=medium

  [ Michael Vogt ]
  * Use "resolved-content" directory provided by newer versions
    of "snap prepare-image". (LP:1636927)
  * SRU tracking number LP: #1920955

 -- Łukasz 'sil2100' Zemczak <lukasz.zemczak@xxxxxxxxxx>  Thu, 25 Mar
2021 14:55:14 +0100

** Changed in: ubuntu-image (Ubuntu Groovy)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1920955

Title:
  [FFe] SRU 1.11 tracking bug

Status in Ubuntu Image:
  Fix Committed
Status in ubuntu-image package in Ubuntu:
  Fix Released
Status in ubuntu-image source package in Xenial:
  Fix Committed
Status in ubuntu-image source package in Bionic:
  Fix Released
Status in ubuntu-image source package in Focal:
  Fix Released
Status in ubuntu-image source package in Groovy:
  Fix Released

Bug description:
  New SRU tracking bug (with exception) for ubuntu-image 1.10 in Groovy,
  Focal, Bionic and Xenial + FFe for hirsute.

  See https://wiki.ubuntu.com/UbuntuImageUpdates

  [Impact]

  ubuntu-image 1.11 is a very very very small and minor release. Basically the only real change (and feature) is related to UC20 images, and is:
   * Use "resolved-content" directory provided by newer versions of "snap prepare-image".

  This is a 'safe' change, as it is fairly isolated, only doing
  something new when snap prepare-image supports it.

  Additionally, for all series below groovy, this release also includes a bugfix for:
   * Add a workaround for mkfs.ext4 forcefully sparsifying our classic image swapfile

  This is a critical change to enable proper building of new DTB-model
  images.

  [FFe rationale]

  This lands so late because all the DTB changes in snapd landed late.
  And we need to have these changes in the Ubuntu archive (most
  importantly in focal) because our UC20 image builds are using ubuntu-
  image from the deb (not the snap). Without this, the UC20 images that
  we build will not include the new DTB structure, which enables proper
  DTB handling via the kernel (not the gadget, as done previously).

  The plus side is that this is really basically the only change in
  1.11. I wouldn't even do a release if not for the fact that we want to
  have proper images building for focal.

  [Test Case]

   * Create an image using the official uc18 amd64 model assertion.
  Ensure that the resulting image boots to 'press enter to configure'
  phase.

   * Create an ubuntu-cpc project classic image using a modified amd64
  gadget tree [1] and make sure it boots.

   * Create an image using the official uc20 amd64 model assertion.
  Ensure that the resulting image boots (possible to ping the
  certification team for help).

  [Regression Potential]

   * ubuntu-image may not produce a bootable image

  [1] For example: https://github.com/sil2100/pc-amd64-gadget

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