Ok, reproduced with focal and broken seeds from an older image, symptoms are exactly the same (including ps/pstree output). The problem is caused by blocking on snapd.seeded.service (which waits for seeding to complete, but it's never going to complete with broken seeds).
Given that this is an edge case (we don't expect images with broken seeds) and focal images have been fixed already, I'm lowering the priority. We will discuss what to do to handle this gracefully. ** Changed in: snapd Importance: Critical => High -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1868706 Title: Snapd postinst script hangs Status in snapd: Triaged Status in dpkg package in Ubuntu: Invalid Status in systemd package in Ubuntu: Invalid Bug description: On a machine which has been tracking upgrades for a while, I am unable to install new versions of snapd. The install process stalls indefinitely. Processes running suggest this is a hang in the postinst: ~$ ps ax | grep dpkg 2388 pts/1 Ss+ 0:00 /usr/bin/dpkg --status-fd 25 --configure --pending 2389 pts/1 S+ 0:00 /bin/sh /var/lib/dpkg/info/snapd.postinst configure 2.43.3+git1.8109f8 2875 pts/2 S+ 0:00 grep --color=auto dpkg ~$ pstree 2388 dpkg───snapd.postinst───systemctl───systemd-tty-ask ~$ ps ax | grep snapd 732 ? Ssl 0:00 /usr/lib/snapd/snapd 2389 pts/1 S+ 0:00 /bin/sh /var/lib/dpkg/info/snapd.postinst configure 2.43.3+git1.8109f8 2452 pts/1 S+ 0:00 /bin/systemctl start snapd.autoimport.service snapd.core-fixup.service snapd.recovery-chooser-trigger.service snapd.seeded.service snapd.service snapd.snap-repair.timer snapd.socket snapd.system-shutdown.service 2880 pts/2 S+ 0:00 grep --color=auto snapd To manage notifications about this bug go to: https://bugs.launchpad.net/snapd/+bug/1868706/+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
