Bug#771825: release-notes: Update information on non-systemd Jessie upgrades and installations

[Niels Thykier <niels@thykier.net>]

Control: tags -1 pending

On 2014-12-15 17:00, Svante Signell wrote:
> [...]
> 
> Hi I trimmed the patch, less text now. However, the LILO comment is
> still there. Do you want me to remove that one too?
> 

Hi,

I have applied a minor patch to day based on your patch submitted here
(See attached).

First hunk was accepted as-is (modulo whitespace).  From the rest, I
extracted some minor pieces if not already documented else where.  In
particular:

 * I documented that installing systemd-shim and sysvinit-core manually
   might help APT and aptitude when the pin is in place.

 * The part of keeping "sysvinit" for having a fallback init was dropped
   as it (meanwhile) got covered in 4.1.4.2[4.1.4].  As the removal of
   sysvinit does not happen automatically, I asserted this was
   sufficient.

 * The [4.1.4.2] section also covers how to reboot using sysvinit as
   long as the bootloader supports changing the kernel command line
   prior to booting.  I know grub supports this and [1] suggests LILO
   is also capable of doing this.

A review is welcome - in particular please let me know if there are
things I left out that you believe should be included regardless.

Thanks,
~Niels

[4.1.4]
https://www.debian.org/releases/jessie/amd64/release-notes/ch-upgrading.en.html#recovery

(The closest I could get to a direct link to 4.1.4.2)

[1] http://docstore.mik.ua/orelly/linux/lnut/ch04_05.htm


From f7b12fd75b034b3da8868b944e247fd7b1c72f51 Mon Sep 17 00:00:00 2001
From: nthykier <nthykier@313b444b-1b9f-4f58-a734-7bb04f332e8d>
Date: Sun, 29 Mar 2015 14:40:44 +0000
Subject: [PATCH] issues: Improve the systemd section a bit

Signed-off-by: Niels Thykier <niels@thykier.net>

git-svn-id: svn+ssh://svn.debian.org/svn/ddp/manuals/trunk/release-notes@10678 313b444b-1b9f-4f58-a734-7bb04f332e8d
---
 en/issues.dbk | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/en/issues.dbk b/en/issues.dbk
index c74cb38..cb69026 100644
--- a/en/issues.dbk
+++ b/en/issues.dbk
@@ -316,8 +316,11 @@ $ echo 'openssh-server openssh-server/permit-root-login boolean true' | debconf-
   <para>
     Jessie ships with <systemitem
     role="package">systemd-sysv</systemitem> as
-    <emphasis>default</emphasis> init system.  If you have a
-    preference for another init such as <systemitem
+    <emphasis>default</emphasis> init system.  This package is
+    installed automatically on upgrades.
+  </para>
+  <para>
+    If you have a preference for another init such as <systemitem
     role="package">sysvinit-core</systemitem> or <systemitem
     role="package">upstart</systemitem>, it is recommended to setup
     APT pinning prior to the upgrade.  This may also be required if
@@ -325,7 +328,7 @@ $ echo 'openssh-server openssh-server/permit-root-login boolean true' | debconf-
     please refer to <xref linkend="issues-lxc-wheezy-host" />.
   </para>
   <para>As an example, to prevent <systemitem
-    role="package">systemd</systemitem> from being installed during the
+    role="package">systemd-sysv</systemitem> from being installed during the
     upgrade, you can create a file called
     <filename>/etc/apt/preferences.d/local-pin-init</filename> with the
     following contents:
@@ -349,6 +352,12 @@ Pin-Priority: -1
     role="package">systemd-sysv</systemitem> package must be
     installed first.
   </para>
+  <para>
+    If APT or aptitude issues computing an upgrade path with the pin
+    in place, you may be able to help it by manually installing both
+    <systemitem role="package">sysvinit-core</systemitem> and
+    <systemitem role="package">systemd-shim</systemitem>.
+  </para>
 <section id="systemd-auto-mounts-incompat">
   <!-- Wheezy to Jessie -->
   <title>Stricter handling of failing mounts during boot under systemd</title>
-- 
2.1.4