[Xen-devel] [PATCH OSSTEST v3 14/19] distros: Support pvgrub for Wheezy too.

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

This requires us to install pv-grub-menu from backports, which we do
using a late_command.

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
v3:
  - Remove spurious () from <<(END) (and the prexisting "" too)
  - Remove $xopts{EnableBackports} and automatically handle the need to add
    backports in preseed_base.
  - Install via late_command not apt-setup, since the former has
    issues, hence subject drops "attempt to..."
---
 Osstest/Debian.pm   | 46 ++++++++++++++++++++++++++++++++++++++++++++--
 make-distros-flight |  4 ++--
 2 files changed, 46 insertions(+), 4 deletions(-)

diff --git a/Osstest/Debian.pm b/Osstest/Debian.pm
index a15768f..dc01be5 100644
--- a/Osstest/Debian.pm
+++ b/Osstest/Debian.pm
@@ -491,7 +491,7 @@ sub preseed_base ($$;@) {
     $extra_packages ||= '';
     $xopts{ExtraPreseed} ||= '';
 
-    return <<"END";
+    my $preseed= <<END;
 d-i mirror/suite string $suite
 
 d-i debian-installer/locale string en_GB
@@ -558,6 +558,17 @@ d-i pkgsel/include string openssh-server, ntp, ntpdate, 
ethtool, wget, $extra_pa
 $xopts{ExtraPreseed}
 END
 
+    # deb http://ftp.debian.org/debian/ wheezy-backports main
+    $preseed .= <<END if $extra_packages =~ m#\b/$suite-backports\b#;
+d-i apt-setup/local0/repository string \\
+    http://$c{DebianMirrorHost}/$c{DebianMirrorSubpath} $suite-backports main
+d-i apt-setup/local0/comment string $suite backports
+END
+# Jessie onwards...
+#    $preseed .= <<END if $extra_packages =~ m#\b/$suite-backports\b#;
+#d-i apt-setup/services-select multiselect security, updates, backports
+#END
+
     $preseed .= <<END;
 ### END OF DEBIAN PRESEED BASE
 END
@@ -570,7 +581,38 @@ sub preseed_create_guest ($$;@) {
 
     my $suite= $xopts{Suite} || $c{DebianSuite};
 
-    my $extra_packages = "pv-grub-menu" if $xopts{PvMenuLst};
+    my $extra_packages = "";
+    if ($xopts{PvMenuLst}) {
+        if ($suite =~ m/wheezy/) {
+            # pv-grub-menu/wheezy-backports + using apt-setup to add
+            # backports results in iproute, ifupdown and
+            # isc-dhcp-client getting removed because tasksel's
+            # invocation of apt-get install somehow decides the
+            # iproute2 from wheezy-backports is a thing it wants to
+            # install. So instead lets fake it with a late command...
+            #
+           # This also has the bonus of working round an issue with
+           # 1.2.1~bpo70+1 which created an invalid menu.lst using
+            # "root(/dev/xvda,0)" which pvgrub cannot parse because
+            # the Grub device.map isn't present at pkgsel/include time
+            # but it is by late_command time. This was fixed by
+            # version 1.3 which is in Jessie onwards.
+            preseed_hook_command($ho, 'late_command', $sfx, <<END);
+#!/bin/sh
+set -ex
+
+(
+    echo
+    echo \\\# $suite backports
+    echo deb http://$c{DebianMirrorHost}/$c{DebianMirrorSubpath} 
$suite-backports main
+) >> /target/etc/apt/sources.list
+in-target apt-get update
+in-target apt-get install -y -t wheezy-backports pv-grub-menu
+END
+        } else {
+            $extra_packages = "pv-grub-menu";
+        }
+    }
 
     my $preseed_file= preseed_base($suite, $extra_packages, %xopts);
     $preseed_file.= (<<END);
diff --git a/make-distros-flight b/make-distros-flight
index 80df21b..97df89a 100755
--- a/make-distros-flight
+++ b/make-distros-flight
@@ -65,9 +65,9 @@ test_do_one_netboot () {
     arm*_arm*_*) bootloader="pygrub";; # no pvgrub for arm
 
     # Needs a menu.lst, not present in Squeeze+ due to switch to grub2,
-    # workedaround in Jessie+ with pv-grub-menu package.
+    # workedaround in Wheezy+ with pv-grub-menu package (backports in Wheezy,
+    # in Jessie+ main).
     *_squeeze) bootloader="pygrub";;
-    *_wheezy) bootloader="pygrub";;
 
     # pv-grub-x86_64.gz is not built by 32-bit dom0 userspace build.
     i386_amd64_*) bootloader="pygrub";;
-- 
2.1.1


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