Comment 14 for bug 1728742

Ran a few tests.

/etc/maas/preseeds/curtin_userdata
https://paste.ubuntu.com/26501712/
early_commands:
  10_add_ppa: ['sh', '-xc', 'DEBIAN_FRONTEND=noninteractive add-apt-repository --yes ppa:raharper/bugfixes']
  # update & upgrade what is there already
  97_update: ['apt-get', 'update']
  98_upgrade: ['sh', '-xc', 'DEBIAN_FRONTEND=noninteractive apt-get upgrade --yes']
...
system_upgrade:
  enabled: True

It seems like /dev/bcache/by-uuid links are set up correctly but labels are not written/persisted

https://paste.ubuntu.com/26502111/

It appears to be that there are also no dname rules written in rules.d hence dname symlinks are not correct when minor numbers change:

ubuntu@maas-xenial2:~$ grep -RiP dname /lib/udev/rules.d/ ; echo $?
1

Not sure if that's my curtin_userdata that is incorrect or something wrong happens during the rule rendering.

root@maas-xenial2:~# pastebinit curtin-install-cfg.yaml
http://paste.ubuntu.com/26502171/

root@maas-xenial2:~# pastebinit curtin-install.log
http://paste.ubuntu.com/26502172/

The package seems to be coming from a ppa correctly based on curtin-install.log.