Ubuntu
cron package

trusty → xenial upgrade fails to upgrade /etc/init.d/cron

Bug #1566333 reported by Martin Pitt
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
cron (Ubuntu)
Fix Released
High
Martin Pitt
Ubuntu ubuntu-16.04
Xenial
Fix Released
High
Martin Pitt
Ubuntu ubuntu-16.04

Bug Description

Upgrading from trusty to xenial is meant to replace "/etc/init.d/cron -> /lib/init/upstart-job" with a real file /etc/init.d/cron.

This works fine in a schroot, but in a container or a VM you end up with

lrwxrwxrwx 1 root root 21 Feb 9 2013 /etc/init.d/cron -> /lib/init/upstart-job
-rwxr-xr-x 1 root root 3049 Feb 17 18:25 /etc/init.d/cron.dpkg-new

Reproducer:

 - start trusty container or VM
 - echo 'deb http://archive.ubuntu.com/ubuntu xenial main restricted universe multiverse' | sudo tee /etc/apt/sources.list
 - sudo apt update
 - sudo apt-get install -y cron

Tags: upgrade xenial
Martin Pitt (pitti)
tags: added: upgrade xenial
Revision history for this message
Martin Pitt (pitti) wrote :

I did a full t→x dist-upgrade of a cloud image, and this is the only package which is affected.

Changed in cron (Ubuntu):
assignee: nobody → Martin Pitt (pitti)
importance: Undecided → High
milestone: none → ubuntu-16.04
status: New → In Progress
Revision history for this message
Martin Pitt (pitti) wrote :

So the situation is that the old cron (https://launchpad.net/ubuntu/+source/cron/3.0pl1-124ubuntu2/+build/4287213/+files/cron_3.0pl1-124ubuntu2_amd64.deb) just ships the symlink in the .deb, and the new cron ships the plain file, and dpkg apparently refuses to replace a symlink with a file. This is currently not handled in the maintainer scripts at all, so we need to add some upgrade logic.

Revision history for this message
Martin Pitt (pitti) wrote :

Fix uploaded, waiting in xenial-proposed unapproved queue for ~ubuntu-release team review.

Changed in cron (Ubuntu Xenial):
status: In Progress → Fix Committed
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package cron - 3.0pl1-128ubuntu2

---------------
cron (3.0pl1-128ubuntu2) xenial; urgency=medium

  * Add debian/cron.preinst: Handle /etc/init.d/cron symlink → real file
    transition on upgrades. (LP: #1566333)

 -- Martin Pitt <email address hidden> Tue, 05 Apr 2016 16:45:50 +0200

Changed in cron (Ubuntu Xenial):
status: Fix Committed → Fix Released
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