Public bug reported:
The apt kernel autoremoval handling should by design keep at least 2 and
at most 3 kernels on the system.
However, on my 17.10 system, I currently have 3 kernels marked for
retention while the kernel I have booted is the newest of these. This
means that I'm not able to upgrade to 18.04 without manual intervention,
because I have a /boot that's sized just large enough to fit 3 kernels,
not 4, apt autoremove won't remove any of the kernels.
The sequence here is that I was running 4.13.0-36-generic; I updated,
which pulled 4.13.0-37-generic onto the system; I ran apt autoremove
--purge, which removed any kernels older than -36- from the system; I
did *not* reboot; I installed 4.13.0-38-generic (from artful-proposed);
all three kernels present are now marked for retention. I rebooted, and
all three kernels are still marked for retention.
If /etc/kernel/postinst.d/apt-auto-removal were run *now*, it would mark
4.13.0-36-generic as autoremovable. But there is nothing that reruns
this script on boot. Maybe there should be?
$ last
vorlon tty2 :0 Tue Mar 20 11:14 still logged in
reboot system boot 4.13.0-38-generi Tue Mar 20 10:34 still running
vorlon tty2 :0 Tue Mar 6 23:12 - down (13+10:21)
reboot system boot 4.13.0-36-generi Tue Mar 6 23:10 - 10:33 (13+10:23)
wtmp begins Tue Mar 6 23:09:27 2018
$
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: apt 1.5.1
ProcVersionSignature: Ubuntu 4.13.0-38.43-generic 4.13.16
Uname: Linux 4.13.0-38-generic x86_64
NonfreeKernelModules: zfs zunicode zavl zcommon znvpair
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Mar 21 13:02:43 2018
InstallationDate: Installed on 2010-09-24 (2735 days ago)
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
SourcePackage: apt
UpgradeStatus: Upgraded to artful on 2018-03-21 (0 days ago)
** Affects: apt (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug artful
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https://bugs.launchpad.net/bugs/1757529
Title:
apt: after reboot, still wants to keep 3 kernels when it should only
keep 2
Status in apt package in Ubuntu:
New
Bug description:
The apt kernel autoremoval handling should by design keep at least 2
and at most 3 kernels on the system.
However, on my 17.10 system, I currently have 3 kernels marked for
retention while the kernel I have booted is the newest of these. This
means that I'm not able to upgrade to 18.04 without manual
intervention, because I have a /boot that's sized just large enough to
fit 3 kernels, not 4, apt autoremove won't remove any of the kernels.
The sequence here is that I was running 4.13.0-36-generic; I updated,
which pulled 4.13.0-37-generic onto the system; I ran apt autoremove
--purge, which removed any kernels older than -36- from the system; I
did *not* reboot; I installed 4.13.0-38-generic (from artful-
proposed); all three kernels present are now marked for retention. I
rebooted, and all three kernels are still marked for retention.
If /etc/kernel/postinst.d/apt-auto-removal were run *now*, it would
mark 4.13.0-36-generic as autoremovable. But there is nothing that
reruns this script on boot. Maybe there should be?
$ last
vorlon tty2 :0 Tue Mar 20 11:14 still logged in
reboot system boot 4.13.0-38-generi Tue Mar 20 10:34 still running
vorlon tty2 :0 Tue Mar 6 23:12 - down (13+10:21)
reboot system boot 4.13.0-36-generi Tue Mar 6 23:10 - 10:33 (13+10:23)
wtmp begins Tue Mar 6 23:09:27 2018
$
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: apt 1.5.1
ProcVersionSignature: Ubuntu 4.13.0-38.43-generic 4.13.16
Uname: Linux 4.13.0-38-generic x86_64
NonfreeKernelModules: zfs zunicode zavl zcommon znvpair
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Mar 21 13:02:43 2018
InstallationDate: Installed on 2010-09-24 (2735 days ago)
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64
(20100816.1)
SourcePackage: apt
UpgradeStatus: Upgraded to artful on 2018-03-21 (0 days ago)
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