[Bug 1836594] Re: Snaps are broken in daily images

[Launchpad Bug Tracker]

This bug was fixed in the package livecd-rootfs - 2.600

---------------
livecd-rootfs (2.600) eoan; urgency=medium

  [ Tobias Koch ]
  * Do proper error checking when calling snap-tool info to determine
    the base of a snap.

  [ Iain Lane ]
  * Seed core for non minimized builds, as it is still required (LP:
    #1836594).

 -- Tobias Koch <tobias.koch at canonical.com>  Mon, 15 Jul 2019 16:13:31
+0100

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

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https://bugs.launchpad.net/bugs/1836594

Title:
  Snaps are broken in daily images

Status in livecd-rootfs package in Ubuntu:
  Fix Released

Bug description:
  eoan:

  livecd-rootfs | 2.599

  bionic:

  livecd-rootfs | 2.525.27

  Images currently being built have non-functional snaps. Seeding never
  finishes, and the journal contains:

  Jul 15 13:52:16 ubuntu snapd[944]: stateengine.go:102: state ensure
  error: devicemgr: cannot proceed without seeding "core"

  seed.yaml doesn't contain core:

  ubuntu at ubuntu:~$ cat /var/lib/snapd/seed/seed.yaml 
  snaps:
    -
      name: core18
      channel: stable
      file: core18_1055.snap
    -
      name: snapd
      channel: stable
      file: snapd_3646.snap
    -
      name: gnome-3-28-1804
      channel: stable/ubuntu-19.10
      file: gnome-3-28-1804_67.snap
    -
      name: gnome-calculator
      channel: stable/ubuntu-19.10
      file: gnome-calculator_406.snap
    -
      name: gnome-characters
      channel: stable/ubuntu-19.10
      file: gnome-characters_296.snap
    -
      name: gnome-logs
      channel: stable/ubuntu-19.10
      file: gnome-logs_61.snap
    -
      name: gnome-system-monitor
      channel: stable/ubuntu-19.10
      file: gnome-system-monitor_100.snap
    -
      name: gtk-common-themes
      channel: stable/ubuntu-19.10
      file: gtk-common-themes_1313.snap

  
  I think it is due to this change in livecd-rootfs:

  laney at raleigh (ubuntu/master↑3|✔)> git show 05e71b38409b5a7cef41ebc864223466292268bb -- live-build/functions                                                                                                                                ~/dev/canonical/release/livecd-rootfs
  commit 05e71b38409b5a7cef41ebc864223466292268bb
  Author: Tobias Koch <tobias.koch at canonical.com>
  Date:   Thu Apr 11 17:46:00 2019 +0200

      Do not include any snaps in ubuntu-cpc:minimized builds

  diff --git a/live-build/functions b/live-build/functions
  index c0dfcdca..6cc87d91 100644
  --- a/live-build/functions
  +++ b/live-build/functions
  @@ -436,6 +436,17 @@ _snap_preseed() {
           return
       fi
   
  +    # Determine if and what core snap is needed
  +    local core_snap=$(/usr/share/livecd-rootfs/snap-tool info \
  +        --cohort-key="${COHORT_KEY:-}" \
  +        --channel="$CHANNEL" "$SNAP_NAME" | \
  +        grep '^base:' | awk '{print $2}'
  +    )
  +
  +    if [ -n "$core_snap" ]; then
  +        _snap_preseed $CHROOT_ROOT $core_snap stable
  +    fi
  +
       sh -c "
           set -x;
           cd \"$CHROOT_ROOT/var/lib/snapd/seed\";
  @@ -544,9 +555,6 @@ snap_prepare() {
       local CUSTOM_BRAND_MODEL=${2:-generic:generic-classic}
   
       snap_prepare_assertions "$CHROOT_ROOT" "$CUSTOM_BRAND_MODEL"
  -
  -    # Download the core snap
  -    _snap_preseed $CHROOT_ROOT core stable
   }
   
   snap_preseed() {

  Which stopped unconditionally seeding core. But this can't be the
  whole story, since disco was built with that livecd-rootfs and it
  *does* have core.

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