[Bug 1881350] Re: snap seeding fails with libc6-lse

[Dimitri John Ledkov]

** Changed in: snapd (Ubuntu Focal)
   Importance: Undecided => Critical

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https://bugs.launchpad.net/bugs/1881350

Title:
  snap seeding fails with libc6-lse

Status in snapd:
  Fix Released
Status in glibc package in Ubuntu:
  Invalid
Status in snapd package in Ubuntu:
  Fix Released
Status in glibc source package in Focal:
  Invalid
Status in snapd source package in Focal:
  New

Bug description:
  Summary
  =====
  When launching a m6g.large AWS instance with the daily groovy image these images now have libc6-lse installed. This appears to prevent seeding of snaps.

  As a result, I see messages about failing to install the seeded snaps,
  which prevents installing any snaps. This also appears to stop cloud-
  init from completing:

  May 29 20:53:37 ip-172-31-44-36 snapd[622]: daemon.go:343: started snapd/2.44.3+20.04 (series 16; classic) ubuntu/20.10 (arm64) linux/5.4.>
  May 29 20:53:38 ip-172-31-44-36 snapd[622]: helpers.go:105: error trying to compare the snap system key: system-key missing on disk
  <snip>
  May 29 20:18:22 ip-10-0-0-79 snapd[1160]: handlers.go:495: Reported install problem for "lxd" as 8b6d20b0-a1e9-11ea-a54f-fa163e6cac46 OOPSID
  May 29 20:18:23 ip-10-0-0-79 snapd[1160]: handlers.go:495: Reported install problem for "core18" as 8b6d20b2-a1e9-11ea-a54f-fa163e6cac46 OOPSID

  Expected behavior
  =====
  $ sudo snap install hello-world
  <installs hello-world>
  $ snap list
  <shows core, core18, lxd, amazon-ssm-agent>

  Actual behavior
  =====
  $ sudo snap install hello-world
  error: too early for operation, device not yet seeded or device model not acknowledged
  $ snap list
  No snaps are installed yet. Try 'snap install hello-world'.

  Logs
  =====
  $ journalctl --system -u snapd
  https://paste.ubuntu.com/p/j5w6mJcnfw/

  $ cat /var/lib/snapd/seed/seed.yaml
  https://paste.ubuntu.com/p/RzRSzW8Ch4/

  $ apt-cache policy snapd
  snapd:
    Installed: 2.44.3+20.04
    Candidate: 2.44.3+20.04

  $ lsb_release -rd
  Description:	Ubuntu Groovy Gorilla (development branch)
  Release:	20.10

  Workaround
  =====
  Removing libc6-lse and rebooting allows snap to seed properly and cloud-init to finish

  Steps to reproduce
  =====
  Launch a m6g.large with the daily 20.10 (Groovy) image via something like:

  $ aws ec2 run-instances --image-id ami-0a5082576164ab1f7 --count 1
  --instance-type m6g.large --key-name $keyname --security-group-ids
  $security-group --subnet-id $subnet-id

  Or you can also do this via the AWS UI by searching for the following
  image name where you update the ending serial as appropriate:

  Failing images:
  ubuntu/images-testing/hvm-ssd/ubuntu-groovy-daily-arm64-server-20200529.1
  ubuntu/images-testing/hvm-ssd/ubuntu-groovy-daily-arm64-server-20200529
  ubuntu/images-testing/hvm-ssd/ubuntu-groovy-daily-arm64-server-20200528
  ubuntu/images-testing/hvm-ssd/ubuntu-groovy-daily-arm64-server-20200519

  Working image:
  ubuntu/images-testing/hvm-ssd/ubuntu-groovy-daily-arm64-server-20200514

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