This bug was fixed in the package unattended-upgrades - 1.10ubuntu5
---------------
unattended-upgrades (1.10ubuntu5) disco; urgency=medium
* Adjust only transitive dependencies in the fallback
when a package from an allowed origin can't be marked to install/upgrade.
This is a much lighter approach than marking every upgradable package
because
the full fallback was triggered on packages held back as well, using an
excessive amount of CPU time.
Also it crashed with packages not having any version in allowed origins.
(LP: #1824804, #1824949)
-- Balint Reczey <rbal...@ubuntu.com> Tue, 16 Apr 2019 08:54:49 +0200
** Changed in: unattended-upgrades (Ubuntu)
Status: Confirmed => Fix Released
--
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/1824804
Title:
Unattended upgrades falls back to adjust all upgradable packages in
attempt to install held packages
Status in unattended-upgrades package in Ubuntu:
Fix Released
Bug description:
[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.
[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
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/1824804/+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
