Comment 0 for bug 1899299

After performing a do-release-upgrade from stock trusty to xenial and rebooting cloud-init traces in it's attempt to preserve instance data:

Probably obj.pkl issues across upgrade and a need to refresh Paths object after the dist upgrade.

2020-10-10 18:01:02,377 - util.py[DEBUG]: Read 298 bytes from /etc/os-release
2020-10-10 18:01:02,378 - util.py[WARNING]: failed stage init-local
2020-10-10 18:01:02,379 - util.py[DEBUG]: failed stage init-local
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 653, in status_wrapper
    ret = functor(name, args)
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 351, in main_init
    _maybe_persist_instance_data(init)
  File "/usr/lib/python3/dist-packages/cloudinit/cmd/main.py", line 695, in _maybe_persist_instance_data
    init.datasource.persist_instance_data()
  File "/usr/lib/python3/dist-packages/cloudinit/sources/__init__.py", line 332, in persist_instance_data
    json_sensitive_file = os.path.join(self.paths.run_dir,
AttributeError: 'Paths' object has no attribute 'run_dir'

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: cloud-init 20.3-2-g371b392c-0ubuntu1~16.04.1
ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.25
Architecture: amd64
CloudName: LXD
Date: Sat Oct 10 21:22:46 2020
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=C.UTF-8
SourcePackage: cloud-init
UpgradeStatus: Upgraded to xenial on 2020-10-10 (0 days ago)
cloud-init-log-warnings:
 2020-10-10 18:01:02,378 - util.py[WARNING]: failed stage init-local
 AttributeError: 'Paths' object has no attribute 'run_dir'
 2020-10-10 18:01:02,979 - util.py[WARNING]: failed stage init
 AttributeError: 'Paths' object has no attribute 'run_dir'