I agree to the check of mastier1: Old version $ apt download postgresql-12=12.2-4 $ dpkg -x postgresql-12_12.2-4_amd64.deb old $ nm -D old/usr/lib/postgresql/12/lib/plpgsql.so | grep EnsurePortalSnapshotExists
New version $ apt download postgresql-12=12.8-0ubuntu0.20.04.1 $ dpkg -x postgresql-12_12.8-0ubuntu0.20.04.1_amd64.deb new $ nm -D new/usr/lib/postgresql/12/lib/plpgsql.so | grep EnsurePortalSnapshotExists U EnsurePortalSnapshotExists In regard to the underlying change it was: https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=41c6a5bec25e720d98bd60d77dd5c2939189ed3c There are other commits then using it, but this is the addition. $ git tag --contains 41c6a5bec25e720d98bd60d77dd5c2939189ed3c REL_12_8 So yeah 12.8 added that symbols, but that should not be a problem in the postgresql packaging but in the mix&match that the maas snap does. But a symbol-add should not break things - not if from the same build. It could be as Marc suggested that maas uses mixed components of which some now need a refresh or rebuild? @maas I'm not sure what else to do here, do you have a way to check and fix this in your snap build? ** Also affects: maas (Ubuntu) Importance: Undecided Status: New ** Also affects: maas Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1939898 Title: Unnatended postgresql-12 upgrade caused MAAS internal error To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1939898/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs