From 91eba8eb20019f998ef03b7bd553f66fc035cdaf Mon Sep 17 00:00:00 2001
From: Alexander Schmidt <alexs@linux.vnet.ibm.com>
Date: Wed, 2 Dec 2015 15:30:44 +0000
Subject: [PATCH] Add distro support for KVM for IBM z Systems

Add "KVM for IBM z Systems" to the list of Fedora-like distros.

As the distribution does not have a dedicated kvm package,
prevent the installation of the kvm package during the libvirt
setup.

Conflicts:
    stack.sh

cherry-picked from a5ea08b7526bee0d9cab51000a477654726de8fe

Change-Id: Ibb5c60797d6867264f9dea7fea85cdf1d7c72ded
---
 functions-common                   | 4 +++-
 lib/nova_plugins/functions-libvirt | 5 ++++-
 stack.sh                           | 2 +-
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/functions-common b/functions-common
index 5d317bea22..f000cf6c0f 100644
--- a/functions-common
+++ b/functions-common
@@ -385,6 +385,8 @@ function GetDistro {
         DISTRO="rhel${os_RELEASE::1}"
     elif [[ "$os_VENDOR" =~ (XenServer) ]]; then
         DISTRO="xs$os_RELEASE"
+    elif [[ "$os_VENDOR" =~ (kvmibm) ]]; then
+        DISTRO="${os_VENDOR}${os_RELEASE::1}"
     else
         # Catch-all for now is Vendor + Release + Update
         DISTRO="$os_VENDOR-$os_RELEASE.$os_UPDATE"
@@ -419,7 +421,7 @@ function is_fedora {
 
     [ "$os_VENDOR" = "Fedora" ] || [ "$os_VENDOR" = "Red Hat" ] || \
         [ "$os_VENDOR" = "CentOS" ] || [ "$os_VENDOR" = "OracleLinux" ] || \
-        [ "$os_VENDOR" = "CloudLinux" ]
+        [ "$os_VENDOR" = "CloudLinux" ] || [ "$os_VENDOR" = "kvmibm" ]
 }
 
 
diff --git a/lib/nova_plugins/functions-libvirt b/lib/nova_plugins/functions-libvirt
index 46ccaf4e0e..30b3628d8a 100755
--- a/lib/nova_plugins/functions-libvirt
+++ b/lib/nova_plugins/functions-libvirt
@@ -38,7 +38,10 @@ function install_libvirt {
         fi
         #pip_install_gr <there-si-no-guestfs-in-pypi>
     elif is_fedora || is_suse; then
-        install_package kvm
+        # On "KVM for IBM z Systems", kvm does not have its own package
+        if [[ ! ${DISTRO} =~ "kvmibm1" ]]; then
+            install_package kvm
+        fi
         # there is a dependency issue with kvm (which is really just a
         # wrapper to qemu-system-x86) that leaves some bios files out,
         # so install qemu-kvm (which shouldn't strictly be needed, as
diff --git a/stack.sh b/stack.sh
index e1b3319fca..78dbf2661c 100755
--- a/stack.sh
+++ b/stack.sh
@@ -169,7 +169,7 @@ source $TOP_DIR/stackrc
 
 # Warn users who aren't on an explicitly supported distro, but allow them to
 # override check and attempt installation with ``FORCE=yes ./stack``
-if [[ ! ${DISTRO} =~ (precise|trusty|utopic|vivid|7.0|wheezy|sid|testing|jessie|f21|f22|rhel7) ]]; then
+if [[ ! ${DISTRO} =~ (precise|trusty|utopic|vivid|7.0|wheezy|sid|testing|jessie|f21|f22|rhel7|kvmibm1) ]]; then
     echo "WARNING: this script has not been tested on $DISTRO"
     if [[ "$FORCE" != "yes" ]]; then
         die $LINENO "If you wish to run this script anyway run with FORCE=yes"