[Xen-devel] [PATCH OSSTEST v2 12/12] make-flight: Use older Debian for host and guest OS with older Xen

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

Sometimes when updating osstest to use a newer version of Debian as a
baseline we find that the new compiler or other tools pickup latent
errors in older code bases for which the fixes are invasive or
otherwise inappropriate for a stable branch.

This is the case with Debian Jessie and Xen 4.3 and earlier, so
restrict those branches to keep using Wheezy.

This only applies to xen-X.Y-testing branches and
qemu-upstream-X.Y-testing branches since other branch all use
xen-unstable as their Xen.

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
v2: Cope with un-abolishing $defsuite and $defguestsuite.
    Dropped Ack.

Runvar differences are of the form:
-xen-4.3-testing            build-amd64                               
all_host_di_version          2015-09-18
-xen-4.3-testing            build-amd64                               
all_host_suite               jessie
+xen-4.3-testing            build-amd64                               
all_host_di_version          2015-09-07
+xen-4.3-testing            build-amd64                               
all_host_suite               wheezy
 xen-4.3-testing            build-amd64                               arch      
                   amd64
-xen-4.3-testing            build-amd64                               
host_hostflags               
share-build-jessie-amd64,arch-amd64,suite-jessie,purpose-build
+xen-4.3-testing            build-amd64                               
host_hostflags               
share-build-wheezy-amd64,arch-amd64,suite-wheezy,purpose-build

Or for a test which uses d-i:

-xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             
all_host_di_version          2015-09-18
-xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             
all_hostflags                arch-amd64,arch-xen-amd64,suite-jessie,purpose-test
-xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             
all_host_suite               jessie
+xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             
all_host_di_version          2015-09-07
+xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             
all_hostflags                arch-amd64,arch-xen-amd64,suite-wheezy,purpose-test
+xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             
all_host_suite               wheezy
 xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             arch      
                   amd64
 xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             buildjob  
                   build-amd64
 xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             
debian_arch                  amd64
 xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             
debian_bootloader            pvgrub
-xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             
debian_di_version            2015-09-18
+xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             
debian_di_version            2015-09-07
 xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             
debian_method                netboot
-xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             
debian_suite                 jessie
+xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             
debian_suite                 wheezy
 xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             
kernbuildjob                 build-amd64-pvops
 xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             kernkind  
                   pvops
 xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             toolstack 
                   xl
 xen-4.3-testing            test-amd64-amd64-amd64-pvgrub             
xenbuildjob                  build-amd64
---
 make-flight | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/make-flight b/make-flight
index 885870c..8acfcb9 100755
--- a/make-flight
+++ b/make-flight
@@ -31,8 +31,21 @@ flight=`./cs-flight-create $blessing $branch`
 . ./ap-common
 . ./mfi-common
 
-defsuite=`getconfig DebianSuite`
-defguestsuite=`getconfig GuestDebianSuite`
+# Older versions of Xen may not build with the current default.  Note
+# that branches older than 4.3 might need something even older than
+# Wheezy, but we have not done the archaeology to figure out what they
+# require.
+case "$xenbranch" in
+  xen-3.*-testing) defsuite="wheezy"; defguestsuite="wheezy";;
+  xen-4.0-testing) defsuite="wheezy"; defguestsuite="wheezy";;
+  xen-4.1-testing) defsuite="wheezy"; defguestsuite="wheezy";;
+  xen-4.2-testing) defsuite="wheezy"; defguestsuite="wheezy";;
+  xen-4.3-testing) defsuite="wheezy"; defguestsuite="wheezy";;
+  *)
+    defsuite=`getconfig DebianSuite`
+    defguestsuite=`getconfig GuestDebianSuite`
+    ;;
+esac
 
 # Pick default Debian Installer version to correspond to the chosen
 # suite.
-- 
2.6.1


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