** Description changed: - The fix for LP: #1821101 allowed installing packages for which APT's + [Impact] + + * The fix for LP: #1821101 allowed installing packages for which APT's resolver could not find solution for without adjusting other packages, but also tries to adjust many packages to install packages which are held back. - See: - https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/1396787/comments/21 + [Test Case] + + * Set up a system where systemd (or a package that can't be upgraded + without also upgrading other packages) need to be upgraded to the + version in -security. + + * Mark systemd on hold + apt mark hold systemd + + * Observe u-u falling back to adjusting all upgradable packages in + unfixed versions and adjusting only a few in fixed versions: + + # unattended-upgrade --verbose --debug + ... + + adjusting candidate version: libnss-systemd=237-3ubuntu10.19 + falling back to marking libnss-systemd, then adjusting changes + package libnss-systemd upgradable but fails to be marked for upgrade (E:Unable to correct problems, you have held broken packages.) + falling back to adjusting all packages + adjusting candidate version: 2ping=4.1-1 + ... + + Fixed: + ... + adjusting candidate version: libnss-systemd=237-3ubuntu10.19 + falling back to adjusting libnss-systemd's dependencies recursively + adjusting candidate version: libnss-systemd=237-3ubuntu10.19 + adjusting candidate version: libkmod2=24-1ubuntu3 + adjusting candidate version: mount=2.31.1-0.4ubuntu3 + adjusting candidate version: libmount1=2.31.1-0.4ubuntu3 + ... + + [Regression Potential] + + * The less extensive fallback may not find solutions for installing + packages with special relationships that the full fallback could have + found, but I don't know about such special cases in the archive and the + autopkgtest cover a fair set of popular packages. Keeping back those + packages seems to be better than spending a lot of CPU time on finding a + few solutions - which still was not enough to find _all_ solutions. + + + [Other Info] + + Originally reported at: https://bugs.launchpad.net/ubuntu/+source + /unattended-upgrades/+bug/1396787/comments/21
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1824804 Title: Unattended upgrades falls back to adjust all upgradable packages in attempt to install held packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/1824804/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
