[Bug 2072885] Re: Lots of services of systemd 256 fail to start in nested LXD containers

[Jose Manuel Santamaria Lema]

Another few things:

I tested the system package from here
https://launchpad.net/~enr0n/+archive/ubuntu/systemd and it still has
the same problem.

Executing /usr/lib/systemd/systemd-networkd just like that resurrects
the network.

Commenting out certain things in /usr/lib/systemd/system/systemd-networkd.service make the network service work again - this is obviously not a solution, but I'm mentioning it in case it helps to debug the problem. The things you have to do with that file to "fix" the problem with -networkd are:
1. comment out the "ImportCredential=network.wireguard.*" line
2. comment out all the "Protect" lines
3. remove "systemd-networkd-persistent-storage.service" from "Wants="
4. systemctl daemon-reload
5. systemctl restart systemd-networkd

Also please note there's also many other services broken, network and
journal are just the most 2 noticeable examples.

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Title:
  Lots of services of systemd 256 fail to start in nested LXD containers

Status in systemd package in Ubuntu:
  New

Bug description:
  Hi,

  since 256 packages entered oracular-proposed I noticed they don't work
  in nested containers.

  This is for me very easy to reproduce:
  1. As LXD server I'm jammy and using the LXD 5.0 version from the snap.
  2. I create a vm or a container
  3. if it's a container set the security.nesting option as true
  4. inside the container or vm created in 2. create another container (with "lxc launch ubuntu-daily:oracular test" for example)
  5. I get into the container and 'apt dist-upgrade'
  6. the system is broken, please see below how

  The first noticeable thing is that right in the package configuration,
  we can see how the network and journal services failed:

  Setting up systemd (256-1ubuntu1) ...
  Installing new version of config file /etc/systemd/journald.conf ...
  Installing new version of config file /etc/systemd/logind.conf ...
  Installing new version of config file /etc/systemd/networkd.conf ...
  Installing new version of config file /etc/systemd/sleep.conf ...
  Installing new version of config file /etc/systemd/system.conf ...
  /usr/lib/tmpfiles.d/legacy.conf:13: Duplicate line for path "/run/lock", ignoring.
  Created symlink '/run/systemd/system/tmp.mount' → '/dev/null'.
  /usr/lib/tmpfiles.d/legacy.conf:13: Duplicate line for path "/run/lock", ignoring.
  Job for systemd-networkd.service failed because the control process exited with error code.
  See "systemctl status systemd-networkd.service" and "journalctl -xeu systemd-networkd.service" for details.
  Job for systemd-journald.service failed because the control process exited with error code.
  See "systemctl status systemd-journald.service" and "journalctl -xeu systemd-journald.service" for details.

  Then we can see the network service exited with 243/CREDENTIALS code:

  root at test:~# systemctl status systemd-networkd
  × systemd-networkd.service - Network Configuration
       Loaded: loaded (/usr/lib/systemd/system/systemd-networkd.service; enabled; preset: enabled)\
       Active: failed (Result: exit-code) since Fri 2024-07-12 05:40:04 UTC; 5min ago
   Invocation: 00540f4884c44ec7a9f286942b8109a2
  TriggeredBy: × systemd-networkd.socket
         Docs: man:systemd-networkd.service(8)\
               man:org.freedesktop.network1(5)\
      Process: 455 ExecStart=/usr/lib/systemd/systemd-networkd (code=exited, status=243/CREDENTIALS)
     Main PID: 455 (code=exited, status=243/CREDENTIALS)
     FD Store: 0 (limit: 512)

  Same for the journal service:

  root at test:~# systemctl status systemd-journald.service
  × systemd-journald.service - Journal Service
       Loaded: loaded (/usr/lib/systemd/system/systemd-journald.service; static)\
      Drop-In: /usr/lib/systemd/system/systemd-journald.service.d
               └─nice.conf\
       Active: failed (Result: exit-code) since Fri 2024-07-12 05:31:39 UTC; 16min ago
   Invocation: 13bc72060e6c4d588869721d57fdba8a
  TriggeredBy: × systemd-journald-dev-log.socket
               × systemd-journald.socket
               ○ systemd-journald-audit.socket
         Docs: man:systemd-journald.service(8)\
               man:journald.conf(5)\
      Process: 181 ExecStart=/usr/lib/systemd/systemd-journald (code=exited, status=243/CREDENTIALS)
     Main PID: 181 (code=exited, status=243/CREDENTIALS)
     FD Store: 0 (limit: 4224)

  And, well, obviously the network doesn't work, neither the journal.

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