Use minimal steps by default

unattended-upgrades made this switch as of version 0.95.

Also fixes the ability to override the default.

README.md

@@ -39,7 +39,7 @@ On some hosts you may find that the unattended-upgrade's cronfile `/etc/cron.dai
 * `unattended_autofix_interrupted_dpkg`: whether on unclean dpkg exit to run `dpkg --force-confold --configure -a`
     * Default: `true`
 * `unattended_minimal_steps`: split the upgrade into the smallest possible chunks so that they can be interrupted with SIGUSR1.
-    * Default: `false`
+    * Default: `true`
 * `unattended_install_on_shutdown`: install all unattended-upgrades when the machine is shuting down.
     * Default: `false`
 * `unattended_mail`: e-mail address to send information about upgrades or problems with unattended upgrades

defaults/main.yml

@@ -27,7 +27,7 @@ unattended_autofix_interrupted_dpkg: true
 # they can be interrupted with SIGUSR1. This makes the upgrade
 # a bit slower but it has the benefit that shutdown while a upgrade
 # is running is possible (with a small delay)
-unattended_minimal_steps: false
+unattended_minimal_steps: true
 
 #Unattended-Upgrade::InstallOnShutdown
 # Install all unattended-upgrades when the machine is shuting down

templates/unattended-upgrades.j2

@@ -27,13 +27,11 @@ Unattended-Upgrade::Package-Blacklist {
 Unattended-Upgrade::AutoFixInterruptedDpkg "false";
 {% endif %}
 
-{% if unattended_minimal_steps %}
 // Split the upgrade into the smallest possible chunks so that
 // they can be interrupted with SIGUSR1. This makes the upgrade
 // a bit slower but it has the benefit that shutdown while a upgrade
 // is running is possible (with a small delay)
-Unattended-Upgrade::MinimalSteps "true";
-{% endif %}
+Unattended-Upgrade::MinimalSteps "{{ unattended_minimal_steps | lower }}";
 
 {% if unattended_install_on_shutdown %}
 // Install all unattended-upgrades when the machine is shuting down