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-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unattended-upgrades in Ubuntu. https://bugs.launchpad.net/bugs/1618900 Title: [Xenial/0.90] Systemd dependencies issues when used in "Shutdown mode" Status in unattended-upgrades package in Ubuntu: Fix Released Status in unattended-upgrades source package in Xenial: Fix Released Status in unattended-upgrades source package in Yakkety: Fix Released Bug description: [Impact] There are some race conditions in unattended-upgrades when it is used in shutdown mode. It is possible that the network has already been brought down or for a local file system, like /var/, to be unmounted before the unattended-upgrades script is run. This then causes the updates not to be installed thereby making systems less secure - if security updates are enabled. [Test Case] Because this is a race condition, I haven't actually been able to recreate the bug. However, the fix is straightforward and testing for regressions should be sufficient. 1) On a freshly installed system. 2) Modify /etc/apt/apt.conf.d/50unattended-upgrades so that Unattended-Upgrade::InstallOnShutdown "true"; is not commented out. 3) Reboot and watch updates being installed 4) Verify updates were installed by reviewing /var/log/unattended-upgrades/unattended-upgrades.log 5) Uncomment -updates in 50unattended-upgrades Repeats steps 3 and 4 again. There isn't any need to run unattended- upgrades in *not* shutdown mode because we have only modified the systemd service file. [Regression Potential] There is little chance of a regression, but because of the change (and this feature now working better) its possible the shutdown process will take longer and surprise users. Original Description -------------------- Using unattended-upgrades 0.90 in "Shutdown mode" on Ubuntu Xenial, we encounter the following systemd dependencies issues : - The network is often down when unattended-upgrades is running, so packages can not be downloaded (can be mitigated by using APT::Periodic::Download-Upgradeable-Packages "1";) : => ERROR An error occurred: 'Could not resolve host: ****.fr' => ERROR The URI 'https://****.fr:33000/ubuntu-security/pool/main/libi/libidn/libidn11_1.32-3ubuntu1.1_amd64.deb' failed to download, aborting - Important mountpoints like /boot are unmounted before unattended-upgrades is running, so newer kernels can not be installed properly (ramdisk and grub configuration can not be generated) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/1618900/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
