Public bug reported:
As reported on
https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1820291/comments/20
We fixed an issue and we added workrounds since basic mv_conffile coudn't
handle it and did all sort of upgrade tests.
That all worked fine and moved the conffile.
It was now reported that due to some pre-checks that unattended upgrades
might do this might do some checks on its own.
Next step:
- check unattended upgrades through this change
- check if it only affects cases were the former config was modified (minority)
or the default file layout (majority)
--- original report copied ---
just wanted to add: This bug also crashes unattended-upgrade and thus
prevents security updates on 18.04:
root@mailin1:~# unattended-upgrade
Traceback (most recent call last):
File "/usr/bin/unattended-upgrade", line 1998, in <module>
sys.exit(main(options))
File "/usr/bin/unattended-upgrade", line 1714, in main
if conffile_prompt(item.destfile):
File "/usr/bin/unattended-upgrade", line 929, in conffile_prompt
with open(prefix + conf_file, 'rb') as fp:
IsADirectoryError: [Errno 21] Is a directory: '/etc/qemu/fsfreeze-hook'
Basically, unattended-upgrade wants to compare old/new conffiles and
doesn't like it when the old conffile turns out to be a directory...
This prevents security updates to be installed. The unattended-upgrade
logs do not contain the trace, only the messages:
2019-04-05 13:24:24,851 INFO Initial blacklisted packages:
2019-04-05 13:24:24,853 INFO Initial whitelisted packages:
2019-04-05 13:24:24,853 INFO Starting unattended upgrades script
2019-04-05 13:24:24,854 INFO Allowed origins are: o=Ubuntu,a=bionic,
o=Ubuntu,a=bionic-security, o=UbuntuESM,a=bionic'
And that's it.
You can't really get out of this without manually running 'apt-get
install qemu-guest-agent' because at this point, unattended-upgrade
can't update itself anymore.
** Affects: qemu (Ubuntu)
Importance: Undecided
Status: New
** Affects: unattended-upgrades (Ubuntu)
Importance: Undecided
Status: New
** Also affects: unattended-upgrades (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1823872
Title:
Fixing fsfreeze-hook can break unattended upgrades
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