I have tested w/ Bionic inside a KVM guest, and the upgrade went fine.
# unattended-upgrades/unattended-upgrades-dpkg.log
Log started: 2018-10-12 09:10:05
(Reading database ... ^M(Reading database ... 5%^M(Reading database ...
10%^M(Reading database ... 15%^M(Reading database ... 20%^M(Reading database
... 25%^M(Reading database ... 30%^M(Reading database ... 35%^M(Reading
database ... 40%^M(Reading database ... 45%^M(Reading database ...
50%^M(Reading database ... 55%^M(Reading database ... 60%^M(Reading database
... 65%^M(Reading database ... 70%^M(Reading database ... 75%^M(Reading
database ... 80%^M(Reading database ... 85%^M(Reading database ...
90%^M(Reading database ... 95%^M(Reading database ... 100%^M(Reading database
... 66657 files and directories currently installed.)^M
Preparing to unpack .../linux-cloud-tools-common_4.15.0-36.39_all.deb ...^M
Unpacking linux-cloud-tools-common (4.15.0-36.39) over (4.15.0-34.37) ...^M
Setting up linux-cloud-tools-common (4.15.0-36.39) ...^M
Processing triggers for ureadahead (0.100.0-20) ...^M
Processing triggers for man-db (2.8.3-2) ...^M
Log ended: 2018-10-12 09:10:09
# dpkg
ii linux-cloud-tools-common 4.15.0-36.39 all
Linux kernel version specific cloud tools for version 4.15.0
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1796376
Title:
Bug #1739107 fix causes linux-cloud-tools-common not to be upgradable
with unattended-upgrades on shutdown mode
Status in linux package in Ubuntu:
Confirmed
Bug description:
Since the following linux-cloud-tools-common package versions :
Xenial : 4.4.0-135.161
Bionic : 4.15.0-34.37
the Systemd service unit file for hv-kvp-daemon has been modified with new
dependencies that make the package unable to be upgraded with
unattended-upgrades on shutdown mode.
Unattended-upgrades hangs with the linux-cloud-tools-common package during
"Preparing to unpack". The server restarts after the unattended-upgrades
service timeout expires.
- Package state after reboot :
iFR linux-cloud-tools-common 4.15.0-34.37
all Linux kernel version specific cloud tools for version
4.15.0
- Unattended-upgrades dpkg logs :
Log started: 2018-10-05 17:59:04
(Reading database ... 52043 files and directories currently installed.)
Preparing to unpack .../linux-cloud-tools-common_4.15.0-36.39_all.deb ...
Log ended: 2018-10-05 18:00:54
- Impact :
The current impact is very important as all security updates are
blocked until you manually fix each server with :
dpkg --configure -a
apt install --only-upgrade linux-cloud-tools-common
- Workaround/Fix :
As a simple straightforward fix, replacing :
Before=shutdown.target cloud-init-local.service walinuxagent.service
with :
Before=shutdown.target walinuxagent.service
makes the package upgradable during shutdown.
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https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1796376/+subscriptions
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