[Bug 1866159] Re: SRU: Use a snap cohort key for consistent parallel builds in Xenial

Robert C Jennings 1866159 at bugs.launchpad.net
Thu Mar 19 11:04:16 UTC 2020


This has been verified using 2.408.58 in xenial-proposed.

I have built the qcow2 image target of the ubuntu-cpc project with and
without a cohort key.

I added the following to the qcow2 binary hook:
 . /build/config/binary
 mkdir qcowmp
 mount_disk_image binary/boot/disk-uefi.ext4 qcowmp
 snap_preseed qcowmp/ lxd
 umount_disk_image qcowmp
 rmdir qcowmp

Booting the resulting livecd.ubuntu-cpc.uefi1.img which came out of the
builds with/without the snap cohort key shows that both boot and
'systemctl is-system-running' gets to 'running' (no failed units).  The
output of 'snap list' shows lxd and core as expected and 'snap info
--verbose' run against each of the snaps in either image confirms that
the cohort key did not persist into the resulting image as expected.

Based on this testing I will mark the bug as verification-done.

** Tags removed: verification-needed verification-needed-xenial
** Tags added: verification-done verification-done-xenial

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https://bugs.launchpad.net/bugs/1866159

Title:
  SRU: Use a snap cohort key for consistent parallel builds in Xenial

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

Bug description:
  
  [Impact] 

  We have snap cohort key support in bionic and later since bug
  #1864252.  Adding cohort support in Xenial gives us the ability to
  create images in parallel LP builds with consistent results across all
  suites.

  [Test Case]

  * Build an image which contains snaps with and without a cohort key
  specified and inspect the image to ensure that the expected snaps are
  preseeded.

  * Ensure that the snaps in the image are not attached to the cohort
  key once installed on first boot with 'snap info --verbose $snap_name'

  [Regression Potential]

   * For images built without a cohort key specified we could fail the
  snap download command, and the build, if this were not tested (it has
  been)

  [Other Info]
   
   * none

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